user/externallib.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * External user API
  19  *
  20  * @package    core_user
  21  * @category   external
  22  * @copyright  2009 Petr Skodak
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 require_once("$CFG->libdir/externallib.php");
  27
  28 /**
  29  * User external functions
  30  *
  31  * @package    core_user
  32  * @category   external
  33  * @copyright  2011 Jerome Mouneyrac
  34  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35  * @since Moodle 2.2
  36  */
  37 class core_user_external extends external_api {
  38
  39     /**
  40      * Returns description of method parameters
  41      *
  42      * @return external_function_parameters
  43      * @since Moodle 2.2
  44      */
  45     public static function create_users_parameters() {
  46         global $CFG;
  47
  48         return new external_function_parameters(
  49             array(
  50                 'users' => new external_multiple_structure(
  51                     new external_single_structure(
  52                         array(
  53                             'username' =>
  54                                 new external_value(PARAM_USERNAME, 'Username policy is defined in Moodle security config.'),
  55                             'password' =>
  56                                 new external_value(PARAM_RAW, 'Plain text password consisting of any characters'),
  57                             'firstname' =>
  58                                 new external_value(PARAM_NOTAGS, 'The first name(s) of the user'),
  59                             'lastname' =>
  60                                 new external_value(PARAM_NOTAGS, 'The family name of the user'),
  61                             'email' =>
  62                                 new external_value(PARAM_EMAIL, 'A valid and unique email address'),
  63                             'auth' =>
  64                                 new external_value(PARAM_PLUGIN, 'Auth plugins include manual, ldap, imap, etc', VALUE_DEFAULT,
  65                                     'manual', NULL_NOT_ALLOWED),
  66                             'idnumber' =>
  67                                 new external_value(PARAM_RAW, 'An arbitrary ID code number perhaps from the institution',
  68                                     VALUE_DEFAULT, ''),
  69                             'lang' =>
  70                                 new external_value(PARAM_SAFEDIR, 'Language code such as "en", must exist on server', VALUE_DEFAULT,
  71                                     $CFG->lang, NULL_NOT_ALLOWED),
  72                             'calendartype' =>
  73                                 new external_value(PARAM_PLUGIN, 'Calendar type such as "gregorian", must exist on server',
  74                                     VALUE_DEFAULT, $CFG->calendartype, VALUE_OPTIONAL),
  75                             'theme' =>
  76                                 new external_value(PARAM_PLUGIN, 'Theme name such as "standard", must exist on server',
  77                                     VALUE_OPTIONAL),
  78                             'timezone' =>
  79                                 new external_value(PARAM_TIMEZONE, 'Timezone code such as Australia/Perth, or 99 for default',
  80                                     VALUE_OPTIONAL),
  81                             'mailformat' =>
  82                                 new external_value(PARAM_INT, 'Mail format code is 0 for plain text, 1 for HTML etc',
  83                                     VALUE_OPTIONAL),
  84                             'description' =>
  85                                 new external_value(PARAM_TEXT, 'User profile description, no HTML', VALUE_OPTIONAL),
  86                             'city' =>
  87                                 new external_value(PARAM_NOTAGS, 'Home city of the user', VALUE_OPTIONAL),
  88                             'country' =>
  89                                 new external_value(PARAM_ALPHA, 'Home country code of the user, such as AU or CZ', VALUE_OPTIONAL),
  90                             'firstnamephonetic' =>
  91                                 new external_value(PARAM_NOTAGS, 'The first name(s) phonetically of the user', VALUE_OPTIONAL),
  92                             'lastnamephonetic' =>
  93                                 new external_value(PARAM_NOTAGS, 'The family name phonetically of the user', VALUE_OPTIONAL),
  94                             'middlename' =>
  95                                 new external_value(PARAM_NOTAGS, 'The middle name of the user', VALUE_OPTIONAL),
  96                             'alternatename' =>
  97                                 new external_value(PARAM_NOTAGS, 'The alternate name of the user', VALUE_OPTIONAL),
  98                             'preferences' => new external_multiple_structure(
  99                                 new external_single_structure(
 100                                     array(
 101                                         'type'  => new external_value(PARAM_ALPHANUMEXT, 'The name of the preference'),
 102                                         'value' => new external_value(PARAM_RAW, 'The value of the preference')
 103                                     )
 104                                 ), 'User preferences', VALUE_OPTIONAL),
 105                             'customfields' => new external_multiple_structure(
 106                                 new external_single_structure(
 107                                     array(
 108                                         'type'  => new external_value(PARAM_ALPHANUMEXT, 'The name of the custom field'),
 109                                         'value' => new external_value(PARAM_RAW, 'The value of the custom field')
 110                                     )
 111                                 ), 'User custom fields (also known as user profil fields)', VALUE_OPTIONAL)
 112                         )
 113                     )
 114                 )
 115             )
 116         );
 117     }
 118
 119     /**
 120      * Create one or more users.
 121      *
 122      * @throws invalid_parameter_exception
 123      * @param array $users An array of users to create.
 124      * @return array An array of arrays
 125      * @since Moodle 2.2
 126      */
 127     public static function create_users($users) {
 128         global $CFG, $DB;
 129         require_once($CFG->dirroot."/lib/weblib.php");
 130         require_once($CFG->dirroot."/user/lib.php");
 131         require_once($CFG->dirroot."/user/profile/lib.php"); // Required for customfields related function.
 132
 133         // Ensure the current user is allowed to run this function.
 134         $context = context_system::instance();
 135         self::validate_context($context);
 136         require_capability('moodle/user:create', $context);
 137
 138         // Do basic automatic PARAM checks on incoming data, using params description.
 139         // If any problems are found then exceptions are thrown with helpful error messages.
 140         $params = self::validate_parameters(self::create_users_parameters(), array('users' => $users));
 141
 142         $availableauths  = core_component::get_plugin_list('auth');
 143         unset($availableauths['mnet']);       // These would need mnethostid too.
 144         unset($availableauths['webservice']); // We do not want new webservice users for now.
 145
 146         $availablethemes = core_component::get_plugin_list('theme');
 147         $availablelangs  = get_string_manager()->get_list_of_translations();
 148
 149         $transaction = $DB->start_delegated_transaction();
 150
 151         $userids = array();
 152         foreach ($params['users'] as $user) {
 153             // Make sure that the username doesn't already exist.
 154             if ($DB->record_exists('user', array('username' => $user['username'], 'mnethostid' => $CFG->mnet_localhost_id))) {
 155                 throw new invalid_parameter_exception('Username already exists: '.$user['username']);
 156             }
 157
 158             // Make sure auth is valid.
 159             if (empty($availableauths[$user['auth']])) {
 160                 throw new invalid_parameter_exception('Invalid authentication type: '.$user['auth']);
 161             }
 162
 163             // Make sure lang is valid.
 164             if (empty($availablelangs[$user['lang']])) {
 165                 throw new invalid_parameter_exception('Invalid language code: '.$user['lang']);
 166             }
 167
 168             // Make sure lang is valid.
 169             if (!empty($user['theme']) && empty($availablethemes[$user['theme']])) { // Theme is VALUE_OPTIONAL,
 170                                                                                      // so no default value
 171                                                                                      // We need to test if the client sent it
 172                                                                                      // => !empty($user['theme']).
 173                 throw new invalid_parameter_exception('Invalid theme: '.$user['theme']);
 174             }
 175
 176             $user['confirmed'] = true;
 177             $user['mnethostid'] = $CFG->mnet_localhost_id;
 178
 179             // Start of user info validation.
 180             // Make sure we validate current user info as handled by current GUI. See user/editadvanced_form.php func validation().
 181             if (!validate_email($user['email'])) {
 182                 throw new invalid_parameter_exception('Email address is invalid: '.$user['email']);
 183             } else if ($DB->record_exists('user', array('email' => $user['email'], 'mnethostid' => $user['mnethostid']))) {
 184                 throw new invalid_parameter_exception('Email address already exists: '.$user['email']);
 185             }
 186             // End of user info validation.
 187
 188             // Create the user data now!
 189             $user['id'] = user_create_user($user, true, false);
 190
 191             // Custom fields.
 192             if (!empty($user['customfields'])) {
 193                 foreach ($user['customfields'] as $customfield) {
 194                     // Profile_save_data() saves profile file it's expecting a user with the correct id,
 195                     // and custom field to be named profile_field_"shortname".
 196                     $user["profile_field_".$customfield['type']] = $customfield['value'];
 197                 }
 198                 profile_save_data((object) $user);
 199             }
 200
 201             // Trigger event.
 202             \core\event\user_created::create_from_userid($user['id'])->trigger();
 203
 204             // Preferences.
 205             if (!empty($user['preferences'])) {
 206                 foreach ($user['preferences'] as $preference) {
 207                     set_user_preference($preference['type'], $preference['value'], $user['id']);
 208                 }
 209             }
 210
 211             $userids[] = array('id' => $user['id'], 'username' => $user['username']);
 212         }
 213
 214         $transaction->allow_commit();
 215
 216         return $userids;
 217     }
 218
 219     /**
 220      * Returns description of method result value
 221      *
 222      * @return external_description
 223      * @since Moodle 2.2
 224      */
 225     public static function create_users_returns() {
 226         return new external_multiple_structure(
 227             new external_single_structure(
 228                 array(
 229                     'id'       => new external_value(PARAM_INT, 'user id'),
 230                     'username' => new external_value(PARAM_USERNAME, 'user name'),
 231                 )
 232             )
 233         );
 234     }
 235
 236
 237     /**
 238      * Returns description of method parameters
 239      *
 240      * @return external_function_parameters
 241      * @since Moodle 2.2
 242      */
 243     public static function delete_users_parameters() {
 244         return new external_function_parameters(
 245             array(
 246                 'userids' => new external_multiple_structure(new external_value(PARAM_INT, 'user ID')),
 247             )
 248         );
 249     }
 250
 251     /**
 252      * Delete users
 253      *
 254      * @throws moodle_exception
 255      * @param array $userids
 256      * @return null
 257      * @since Moodle 2.2
 258      */
 259     public static function delete_users($userids) {
 260         global $CFG, $DB, $USER;
 261         require_once($CFG->dirroot."/user/lib.php");
 262
 263         // Ensure the current user is allowed to run this function.
 264         $context = context_system::instance();
 265         require_capability('moodle/user:delete', $context);
 266         self::validate_context($context);
 267
 268         $params = self::validate_parameters(self::delete_users_parameters(), array('userids' => $userids));
 269
 270         $transaction = $DB->start_delegated_transaction();
 271
 272         foreach ($params['userids'] as $userid) {
 273             $user = $DB->get_record('user', array('id' => $userid, 'deleted' => 0), '*', MUST_EXIST);
 274             // Must not allow deleting of admins or self!!!
 275             if (is_siteadmin($user)) {
 276                 throw new moodle_exception('useradminodelete', 'error');
 277             }
 278             if ($USER->id == $user->id) {
 279                 throw new moodle_exception('usernotdeletederror', 'error');
 280             }
 281             user_delete_user($user);
 282         }
 283
 284         $transaction->allow_commit();
 285
 286         return null;
 287     }
 288
 289     /**
 290      * Returns description of method result value
 291      *
 292      * @return null
 293      * @since Moodle 2.2
 294      */
 295     public static function delete_users_returns() {
 296         return null;
 297     }
 298
 299
 300     /**
 301      * Returns description of method parameters
 302      *
 303      * @return external_function_parameters
 304      * @since Moodle 2.2
 305      */
 306     public static function update_users_parameters() {
 307         return new external_function_parameters(
 308             array(
 309                 'users' => new external_multiple_structure(
 310                     new external_single_structure(
 311                         array(
 312                             'id' =>
 313                                 new external_value(PARAM_INT, 'ID of the user'),
 314                             'username' =>
 315                                 new external_value(PARAM_USERNAME, 'Username policy is defined in Moodle security config.',
 316                                     VALUE_OPTIONAL, '', NULL_NOT_ALLOWED),
 317                             'password' =>
 318                                 new external_value(PARAM_RAW, 'Plain text password consisting of any characters', VALUE_OPTIONAL,
 319                                     '', NULL_NOT_ALLOWED),
 320                             'firstname' =>
 321                                 new external_value(PARAM_NOTAGS, 'The first name(s) of the user', VALUE_OPTIONAL, '',
 322                                     NULL_NOT_ALLOWED),
 323                             'lastname' =>
 324                                 new external_value(PARAM_NOTAGS, 'The family name of the user', VALUE_OPTIONAL),
 325                             'email' =>
 326                                 new external_value(PARAM_EMAIL, 'A valid and unique email address', VALUE_OPTIONAL, '',
 327                                     NULL_NOT_ALLOWED),
 328                             'auth' =>
 329                                 new external_value(PARAM_PLUGIN, 'Auth plugins include manual, ldap, imap, etc', VALUE_OPTIONAL, '',
 330                                     NULL_NOT_ALLOWED),
 331                             'idnumber' =>
 332                                 new external_value(PARAM_RAW, 'An arbitrary ID code number perhaps from the institution',
 333                                     VALUE_OPTIONAL),
 334                             'lang' =>
 335                                 new external_value(PARAM_SAFEDIR, 'Language code such as "en", must exist on server',
 336                                     VALUE_OPTIONAL, '', NULL_NOT_ALLOWED),
 337                             'calendartype' =>
 338                                 new external_value(PARAM_PLUGIN, 'Calendar type such as "gregorian", must exist on server',
 339                                     VALUE_OPTIONAL, '', NULL_NOT_ALLOWED),
 340                             'theme' =>
 341                                 new external_value(PARAM_PLUGIN, 'Theme name such as "standard", must exist on server',
 342                                     VALUE_OPTIONAL),
 343                             'timezone' =>
 344                                 new external_value(PARAM_TIMEZONE, 'Timezone code such as Australia/Perth, or 99 for default',
 345                                     VALUE_OPTIONAL),
 346                             'mailformat' =>
 347                                 new external_value(PARAM_INT, 'Mail format code is 0 for plain text, 1 for HTML etc',
 348                                     VALUE_OPTIONAL),
 349                             'description' =>
 350                                 new external_value(PARAM_TEXT, 'User profile description, no HTML', VALUE_OPTIONAL),
 351                             'city' =>
 352                                 new external_value(PARAM_NOTAGS, 'Home city of the user', VALUE_OPTIONAL),
 353                             'country' =>
 354                                 new external_value(PARAM_ALPHA, 'Home country code of the user, such as AU or CZ', VALUE_OPTIONAL),
 355                             'firstnamephonetic' =>
 356                                 new external_value(PARAM_NOTAGS, 'The first name(s) phonetically of the user', VALUE_OPTIONAL),
 357                             'lastnamephonetic' =>
 358                                 new external_value(PARAM_NOTAGS, 'The family name phonetically of the user', VALUE_OPTIONAL),
 359                             'middlename' =>
 360                                 new external_value(PARAM_NOTAGS, 'The middle name of the user', VALUE_OPTIONAL),
 361                             'alternatename' =>
 362                                 new external_value(PARAM_NOTAGS, 'The alternate name of the user', VALUE_OPTIONAL),
 363                             'customfields' => new external_multiple_structure(
 364                                 new external_single_structure(
 365                                     array(
 366                                         'type'  => new external_value(PARAM_ALPHANUMEXT, 'The name of the custom field'),
 367                                         'value' => new external_value(PARAM_RAW, 'The value of the custom field')
 368                                     )
 369                                 ), 'User custom fields (also known as user profil fields)', VALUE_OPTIONAL),
 370                             'preferences' => new external_multiple_structure(
 371                                 new external_single_structure(
 372                                     array(
 373                                         'type'  => new external_value(PARAM_ALPHANUMEXT, 'The name of the preference'),
 374                                         'value' => new external_value(PARAM_RAW, 'The value of the preference')
 375                                     )
 376                                 ), 'User preferences', VALUE_OPTIONAL),
 377                         )
 378                     )
 379                 )
 380             )
 381         );
 382     }
 383
 384     /**
 385      * Update users
 386      *
 387      * @param array $users
 388      * @return null
 389      * @since Moodle 2.2
 390      */
 391     public static function update_users($users) {
 392         global $CFG, $DB;
 393         require_once($CFG->dirroot."/user/lib.php");
 394         require_once($CFG->dirroot."/user/profile/lib.php"); // Required for customfields related function.
 395
 396         // Ensure the current user is allowed to run this function.
 397         $context = context_system::instance();
 398         require_capability('moodle/user:update', $context);
 399         self::validate_context($context);
 400
 401         $params = self::validate_parameters(self::update_users_parameters(), array('users' => $users));
 402
 403         $transaction = $DB->start_delegated_transaction();
 404
 405         foreach ($params['users'] as $user) {
 406             user_update_user($user, true, false);
 407             // Update user custom fields.
 408             if (!empty($user['customfields'])) {
 409
 410                 foreach ($user['customfields'] as $customfield) {
 411                     // Profile_save_data() saves profile file it's expecting a user with the correct id,
 412                     // and custom field to be named profile_field_"shortname".
 413                     $user["profile_field_".$customfield['type']] = $customfield['value'];
 414                 }
 415                 profile_save_data((object) $user);
 416             }
 417
 418             // Trigger event.
 419             \core\event\user_updated::create_from_userid($user['id'])->trigger();
 420
 421             // Preferences.
 422             if (!empty($user['preferences'])) {
 423                 foreach ($user['preferences'] as $preference) {
 424                     set_user_preference($preference['type'], $preference['value'], $user['id']);
 425                 }
 426             }
 427         }
 428
 429         $transaction->allow_commit();
 430
 431         return null;
 432     }
 433
 434     /**
 435      * Returns description of method result value
 436      *
 437      * @return null
 438      * @since Moodle 2.2
 439      */
 440     public static function update_users_returns() {
 441         return null;
 442     }
 443
 444     /**
 445      * Returns description of method parameters
 446      *
 447      * @return external_function_parameters
 448      * @since Moodle 2.4
 449      */
 450     public static function get_users_by_field_parameters() {
 451         return new external_function_parameters(
 452             array(
 453                 'field' => new external_value(PARAM_ALPHA, 'the search field can be
 454                     \'id\' or \'idnumber\' or \'username\' or \'email\''),
 455                 'values' => new external_multiple_structure(
 456                         new external_value(PARAM_RAW, 'the value to match'))
 457             )
 458         );
 459     }
 460
 461     /**
 462      * Get user information for a unique field.
 463      *
 464      * @throws coding_exception
 465      * @throws invalid_parameter_exception
 466      * @param string $field
 467      * @param array $values
 468      * @return array An array of arrays containg user profiles.
 469      * @since Moodle 2.4
 470      */
 471     public static function get_users_by_field($field, $values) {
 472         global $CFG, $USER, $DB;
 473         require_once($CFG->dirroot . "/user/lib.php");
 474
 475         $params = self::validate_parameters(self::get_users_by_field_parameters(),
 476                 array('field' => $field, 'values' => $values));
 477
 478         // This array will keep all the users that are allowed to be searched,
 479         // according to the current user's privileges.
 480         $cleanedvalues = array();
 481
 482         switch ($field) {
 483             case 'id':
 484                 $paramtype = PARAM_INT;
 485                 break;
 486             case 'idnumber':
 487                 $paramtype = PARAM_RAW;
 488                 break;
 489             case 'username':
 490                 $paramtype = PARAM_RAW;
 491                 break;
 492             case 'email':
 493                 $paramtype = PARAM_EMAIL;
 494                 break;
 495             default:
 496                 throw new coding_exception('invalid field parameter',
 497                         'The search field \'' . $field . '\' is not supported, look at the web service documentation');
 498         }
 499
 500         // Clean the values.
 501         foreach ($values as $value) {
 502             $cleanedvalue = clean_param($value, $paramtype);
 503             if ( $value != $cleanedvalue) {
 504                 throw new invalid_parameter_exception('The field \'' . $field .
 505                         '\' value is invalid: ' . $value . '(cleaned value: '.$cleanedvalue.')');
 506             }
 507             $cleanedvalues[] = $cleanedvalue;
 508         }
 509
 510         // Retrieve the users.
 511         $users = $DB->get_records_list('user', $field, $cleanedvalues, 'id');
 512
 513         // Finally retrieve each users information.
 514         $returnedusers = array();
 515         foreach ($users as $user) {
 516             $userdetails = user_get_user_details_courses($user);
 517
 518             // Return the user only if the searched field is returned.
 519             // Otherwise it means that the $USER was not allowed to search the returned user.
 520             if (!empty($userdetails) and !empty($userdetails[$field])) {
 521                 $returnedusers[] = $userdetails;
 522             }
 523         }
 524
 525         return $returnedusers;
 526     }
 527
 528     /**
 529      * Returns description of method result value
 530      *
 531      * @return external_multiple_structure
 532      * @since Moodle 2.4
 533      */
 534     public static function get_users_by_field_returns() {
 535         return new external_multiple_structure(self::user_description());
 536     }
 537
 538
 539     /**
 540      * Returns description of get_users() parameters.
 541      *
 542      * @return external_function_parameters
 543      * @since Moodle 2.5
 544      */
 545     public static function get_users_parameters() {
 546         return new external_function_parameters(
 547             array(
 548                 'criteria' => new external_multiple_structure(
 549                     new external_single_structure(
 550                         array(
 551                             'key' => new external_value(PARAM_ALPHA, 'the user column to search, expected keys (value format) are:
 552                                 "id" (int) matching user id,
 553                                 "lastname" (string) user last name (Note: you can use % for searching but it may be considerably slower!),
 554                                 "firstname" (string) user first name (Note: you can use % for searching but it may be considerably slower!),
 555                                 "idnumber" (string) matching user idnumber,
 556                                 "username" (string) matching user username,
 557                                 "email" (string) user email (Note: you can use % for searching but it may be considerably slower!),
 558                                 "auth" (string) matching user auth plugin'),
 559                             'value' => new external_value(PARAM_RAW, 'the value to search')
 560                         )
 561                     ), 'the key/value pairs to be considered in user search. Values can not be empty.
 562                         Specify different keys only once (fullname => \'user1\', auth => \'manual\', ...) -
 563                         key occurences are forbidden.
 564                         The search is executed with AND operator on the criterias. Invalid criterias (keys) are ignored,
 565                         the search is still executed on the valid criterias.
 566                         You can search without criteria, but the function is not designed for it.
 567                         It could very slow or timeout. The function is designed to search some specific users.'
 568                 )
 569             )
 570         );
 571     }
 572
 573     /**
 574      * Retrieve matching user.
 575      *
 576      * @throws moodle_exception
 577      * @param array $criteria the allowed array keys are id/lastname/firstname/idnumber/username/email/auth.
 578      * @return array An array of arrays containing user profiles.
 579      * @since Moodle 2.5
 580      */
 581     public static function get_users($criteria = array()) {
 582         global $CFG, $USER, $DB;
 583
 584         require_once($CFG->dirroot . "/user/lib.php");
 585
 586         $params = self::validate_parameters(self::get_users_parameters(),
 587                 array('criteria' => $criteria));
 588
 589         // Validate the criteria and retrieve the users.
 590         $users = array();
 591         $warnings = array();
 592         $sqlparams = array();
 593         $usedkeys = array();
 594
 595         // Do not retrieve deleted users.
 596         $sql = ' deleted = 0';
 597
 598         foreach ($params['criteria'] as $criteriaindex => $criteria) {
 599
 600             // Check that the criteria has never been used.
 601             if (array_key_exists($criteria['key'], $usedkeys)) {
 602                 throw new moodle_exception('keyalreadyset', '', '', null, 'The key ' . $criteria['key'] . ' can only be sent once');
 603             } else {
 604                 $usedkeys[$criteria['key']] = true;
 605             }
 606
 607             $invalidcriteria = false;
 608             // Clean the parameters.
 609             $paramtype = PARAM_RAW;
 610             switch ($criteria['key']) {
 611                 case 'id':
 612                     $paramtype = PARAM_INT;
 613                     break;
 614                 case 'idnumber':
 615                     $paramtype = PARAM_RAW;
 616                     break;
 617                 case 'username':
 618                     $paramtype = PARAM_RAW;
 619                     break;
 620                 case 'email':
 621                     // We use PARAM_RAW to allow searches with %.
 622                     $paramtype = PARAM_RAW;
 623                     break;
 624                 case 'auth':
 625                     $paramtype = PARAM_AUTH;
 626                     break;
 627                 case 'lastname':
 628                 case 'firstname':
 629                     $paramtype = PARAM_TEXT;
 630                     break;
 631                 default:
 632                     // Send back a warning that this search key is not supported in this version.
 633                     // This warning will make the function extandable without breaking clients.
 634                     $warnings[] = array(
 635                         'item' => $criteria['key'],
 636                         'warningcode' => 'invalidfieldparameter',
 637                         'message' =>
 638                             'The search key \'' . $criteria['key'] . '\' is not supported, look at the web service documentation'
 639                     );
 640                     // Do not add this invalid criteria to the created SQL request.
 641                     $invalidcriteria = true;
 642                     unset($params['criteria'][$criteriaindex]);
 643                     break;
 644             }
 645
 646             if (!$invalidcriteria) {
 647                 $cleanedvalue = clean_param($criteria['value'], $paramtype);
 648
 649                 $sql .= ' AND ';
 650
 651                 // Create the SQL.
 652                 switch ($criteria['key']) {
 653                     case 'id':
 654                     case 'idnumber':
 655                     case 'username':
 656                     case 'auth':
 657                         $sql .= $criteria['key'] . ' = :' . $criteria['key'];
 658                         $sqlparams[$criteria['key']] = $cleanedvalue;
 659                         break;
 660                     case 'email':
 661                     case 'lastname':
 662                     case 'firstname':
 663                         $sql .= $DB->sql_like($criteria['key'], ':' . $criteria['key'], false);
 664                         $sqlparams[$criteria['key']] = $cleanedvalue;
 665                         break;
 666                     default:
 667                         break;
 668                 }
 669             }
 670         }
 671
 672         $users = $DB->get_records_select('user', $sql, $sqlparams, 'id ASC');
 673
 674         // Finally retrieve each users information.
 675         $returnedusers = array();
 676         foreach ($users as $user) {
 677             $userdetails = user_get_user_details_courses($user);
 678
 679             // Return the user only if all the searched fields are returned.
 680             // Otherwise it means that the $USER was not allowed to search the returned user.
 681             if (!empty($userdetails)) {
 682                 $validuser = true;
 683
 684                 foreach ($params['criteria'] as $criteria) {
 685                     if (empty($userdetails[$criteria['key']])) {
 686                         $validuser = false;
 687                     }
 688                 }
 689
 690                 if ($validuser) {
 691                     $returnedusers[] = $userdetails;
 692                 }
 693             }
 694         }
 695
 696         return array('users' => $returnedusers, 'warnings' => $warnings);
 697     }
 698
 699     /**
 700      * Returns description of get_users result value.
 701      *
 702      * @return external_description
 703      * @since Moodle 2.5
 704      */
 705     public static function get_users_returns() {
 706         return new external_single_structure(
 707             array('users' => new external_multiple_structure(
 708                                 self::user_description()
 709                              ),
 710                   'warnings' => new external_warnings('always set to \'key\'', 'faulty key name')
 711             )
 712         );
 713     }
 714
 715     /**
 716      * Returns description of method parameters
 717      *
 718      * @return external_function_parameters
 719      * @since Moodle 2.2
 720      * @deprecated Moodle 2.5 MDL-38030 - Please do not call this function any more.
 721      * @see core_user_external::get_users_by_field_parameters()
 722      */
 723     public static function get_users_by_id_parameters() {
 724         return new external_function_parameters(
 725             array(
 726                 'userids' => new external_multiple_structure(new external_value(PARAM_INT, 'user ID')),
 727             )
 728         );
 729     }
 730
 731     /**
 732      * Get user information
 733      * - This function is matching the permissions of /user/profil.php
 734      * - It is also matching some permissions from /user/editadvanced.php for the following fields:
 735      *   auth, confirmed, idnumber, lang, theme, timezone, mailformat
 736      *
 737      * @param array $userids  array of user ids
 738      * @return array An array of arrays describing users
 739      * @since Moodle 2.2
 740      * @deprecated Moodle 2.5 MDL-38030 - Please do not call this function any more.
 741      * @see core_user_external::get_users_by_field()
 742      */
 743     public static function get_users_by_id($userids) {
 744         global $CFG, $USER, $DB;
 745         require_once($CFG->dirroot . "/user/lib.php");
 746
 747         $params = self::validate_parameters(self::get_users_by_id_parameters(),
 748                 array('userids' => $userids));
 749
 750         list($sqluserids, $params) = $DB->get_in_or_equal($userids, SQL_PARAMS_NAMED);
 751         $uselect = ', ' . context_helper::get_preload_record_columns_sql('ctx');
 752         $ujoin = "LEFT JOIN {context} ctx ON (ctx.instanceid = u.id AND ctx.contextlevel = :contextlevel)";
 753         $params['contextlevel'] = CONTEXT_USER;
 754         $usersql = "SELECT u.* $uselect
 755                       FROM {user} u $ujoin
 756                      WHERE u.id $sqluserids";
 757         $users = $DB->get_recordset_sql($usersql, $params);
 758
 759         $result = array();
 760         $hasuserupdatecap = has_capability('moodle/user:update', context_system::instance());
 761         foreach ($users as $user) {
 762             if (!empty($user->deleted)) {
 763                 continue;
 764             }
 765             context_helper::preload_from_record($user);
 766             $usercontext = context_user::instance($user->id, IGNORE_MISSING);
 767             self::validate_context($usercontext);
 768             $currentuser = ($user->id == $USER->id);
 769
 770             if ($userarray  = user_get_user_details($user)) {
 771                 // Fields matching permissions from /user/editadvanced.php.
 772                 if ($currentuser or $hasuserupdatecap) {
 773                     $userarray['auth']       = $user->auth;
 774                     $userarray['confirmed']  = $user->confirmed;
 775                     $userarray['idnumber']   = $user->idnumber;
 776                     $userarray['lang']       = $user->lang;
 777                     $userarray['theme']      = $user->theme;
 778                     $userarray['timezone']   = $user->timezone;
 779                     $userarray['mailformat'] = $user->mailformat;
 780                 }
 781                 $result[] = $userarray;
 782             }
 783         }
 784         $users->close();
 785
 786         return $result;
 787     }
 788
 789     /**
 790      * Returns description of method result value
 791      *
 792      * @return external_description
 793      * @since Moodle 2.2
 794      * @deprecated Moodle 2.5 MDL-38030 - Please do not call this function any more.
 795      * @see core_user_external::get_users_by_field_returns()
 796      */
 797     public static function get_users_by_id_returns() {
 798         $additionalfields = array (
 799             'enrolledcourses' => new external_multiple_structure(
 800             new external_single_structure(
 801                 array(
 802                     'id'  => new external_value(PARAM_INT, 'Id of the course'),
 803                     'fullname'  => new external_value(PARAM_RAW, 'Fullname of the course'),
 804                     'shortname' => new external_value(PARAM_RAW, 'Shortname of the course')
 805                 )
 806             ), 'Courses where the user is enrolled - limited by which courses the user is able to see', VALUE_OPTIONAL));
 807         return new external_multiple_structure(self::user_description($additionalfields));
 808     }
 809
 810     /**
 811      * Marking the method as deprecated.
 812      *
 813      * @return bool
 814      */
 815     public static function get_users_by_id_is_deprecated() {
 816         return true;
 817     }
 818
 819     /**
 820      * Returns description of method parameters
 821      *
 822      * @return external_function_parameters
 823      * @since Moodle 2.2
 824      */
 825     public static function get_course_user_profiles_parameters() {
 826         return new external_function_parameters(
 827             array(
 828                 'userlist' => new external_multiple_structure(
 829                     new external_single_structure(
 830                         array(
 831                             'userid'    => new external_value(PARAM_INT, 'userid'),
 832                             'courseid'    => new external_value(PARAM_INT, 'courseid'),
 833                         )
 834                     )
 835                 )
 836             )
 837         );
 838     }
 839
 840     /**
 841      * Get course participant's details
 842      *
 843      * @param array $userlist  array of user ids and according course ids
 844      * @return array An array of arrays describing course participants
 845      * @since Moodle 2.2
 846      */
 847     public static function get_course_user_profiles($userlist) {
 848         global $CFG, $USER, $DB;
 849         require_once($CFG->dirroot . "/user/lib.php");
 850         $params = self::validate_parameters(self::get_course_user_profiles_parameters(), array('userlist' => $userlist));
 851
 852         $userids = array();
 853         $courseids = array();
 854         foreach ($params['userlist'] as $value) {
 855             $userids[] = $value['userid'];
 856             $courseids[$value['userid']] = $value['courseid'];
 857         }
 858
 859         // Cache all courses.
 860         $courses = array();
 861         list($sqlcourseids, $params) = $DB->get_in_or_equal(array_unique($courseids), SQL_PARAMS_NAMED);
 862         $cselect = ', ' . context_helper::get_preload_record_columns_sql('ctx');
 863         $cjoin = "LEFT JOIN {context} ctx ON (ctx.instanceid = c.id AND ctx.contextlevel = :contextlevel)";
 864         $params['contextlevel'] = CONTEXT_COURSE;
 865         $coursesql = "SELECT c.* $cselect
 866                         FROM {course} c $cjoin
 867                        WHERE c.id $sqlcourseids";
 868         $rs = $DB->get_recordset_sql($coursesql, $params);
 869         foreach ($rs as $course) {
 870             // Adding course contexts to cache.
 871             context_helper::preload_from_record($course);
 872             // Cache courses.
 873             $courses[$course->id] = $course;
 874         }
 875         $rs->close();
 876
 877         list($sqluserids, $params) = $DB->get_in_or_equal($userids, SQL_PARAMS_NAMED);
 878         $uselect = ', ' . context_helper::get_preload_record_columns_sql('ctx');
 879         $ujoin = "LEFT JOIN {context} ctx ON (ctx.instanceid = u.id AND ctx.contextlevel = :contextlevel)";
 880         $params['contextlevel'] = CONTEXT_USER;
 881         $usersql = "SELECT u.* $uselect
 882                       FROM {user} u $ujoin
 883                      WHERE u.id $sqluserids";
 884         $users = $DB->get_recordset_sql($usersql, $params);
 885         $result = array();
 886         foreach ($users as $user) {
 887             if (!empty($user->deleted)) {
 888                 continue;
 889             }
 890             context_helper::preload_from_record($user);
 891             $course = $courses[$courseids[$user->id]];
 892             $context = context_course::instance($courseids[$user->id], IGNORE_MISSING);
 893             self::validate_context($context);
 894             if ($userarray = user_get_user_details($user, $course)) {
 895                 $result[] = $userarray;
 896             }
 897         }
 898
 899         $users->close();
 900
 901         return $result;
 902     }
 903
 904     /**
 905      * Returns description of method result value
 906      *
 907      * @return external_description
 908      * @since Moodle 2.2
 909      */
 910     public static function get_course_user_profiles_returns() {
 911         $additionalfields = array(
 912             'groups' => new external_multiple_structure(
 913                 new external_single_structure(
 914                     array(
 915                         'id'  => new external_value(PARAM_INT, 'group id'),
 916                         'name' => new external_value(PARAM_RAW, 'group name'),
 917                         'description' => new external_value(PARAM_RAW, 'group description'),
 918                         'descriptionformat' => new external_format_value('description'),
 919                     )
 920                 ), 'user groups', VALUE_OPTIONAL),
 921             'roles' => new external_multiple_structure(
 922                 new external_single_structure(
 923                     array(
 924                         'roleid'       => new external_value(PARAM_INT, 'role id'),
 925                         'name'         => new external_value(PARAM_RAW, 'role name'),
 926                         'shortname'    => new external_value(PARAM_ALPHANUMEXT, 'role shortname'),
 927                         'sortorder'    => new external_value(PARAM_INT, 'role sortorder')
 928                     )
 929                 ), 'user roles', VALUE_OPTIONAL),
 930             'enrolledcourses' => new external_multiple_structure(
 931                 new external_single_structure(
 932                     array(
 933                         'id'  => new external_value(PARAM_INT, 'Id of the course'),
 934                         'fullname'  => new external_value(PARAM_RAW, 'Fullname of the course'),
 935                         'shortname' => new external_value(PARAM_RAW, 'Shortname of the course')
 936                     )
 937                 ), 'Courses where the user is enrolled - limited by which courses the user is able to see', VALUE_OPTIONAL)
 938         );
 939
 940         return new external_multiple_structure(self::user_description($additionalfields));
 941     }
 942
 943     /**
 944      * Create user return value description.
 945      *
 946      * @param array $additionalfields some additional field
 947      * @return single_structure_description
 948      */
 949     public static function user_description($additionalfields = array()) {
 950         $userfields = array(
 951             'id'    => new external_value(PARAM_INT, 'ID of the user'),
 952             'username'    => new external_value(PARAM_RAW, 'The username', VALUE_OPTIONAL),
 953             'firstname'   => new external_value(PARAM_NOTAGS, 'The first name(s) of the user', VALUE_OPTIONAL),
 954             'lastname'    => new external_value(PARAM_NOTAGS, 'The family name of the user', VALUE_OPTIONAL),
 955             'fullname'    => new external_value(PARAM_NOTAGS, 'The fullname of the user'),
 956             'email'       => new external_value(PARAM_TEXT, 'An email address - allow email as root@localhost', VALUE_OPTIONAL),
 957             'address'     => new external_value(PARAM_TEXT, 'Postal address', VALUE_OPTIONAL),
 958             'phone1'      => new external_value(PARAM_NOTAGS, 'Phone 1', VALUE_OPTIONAL),
 959             'phone2'      => new external_value(PARAM_NOTAGS, 'Phone 2', VALUE_OPTIONAL),
 960             'icq'         => new external_value(PARAM_NOTAGS, 'icq number', VALUE_OPTIONAL),
 961             'skype'       => new external_value(PARAM_NOTAGS, 'skype id', VALUE_OPTIONAL),
 962             'yahoo'       => new external_value(PARAM_NOTAGS, 'yahoo id', VALUE_OPTIONAL),
 963             'aim'         => new external_value(PARAM_NOTAGS, 'aim id', VALUE_OPTIONAL),
 964             'msn'         => new external_value(PARAM_NOTAGS, 'msn number', VALUE_OPTIONAL),
 965             'department'  => new external_value(PARAM_TEXT, 'department', VALUE_OPTIONAL),
 966             'institution' => new external_value(PARAM_TEXT, 'institution', VALUE_OPTIONAL),
 967             'idnumber'    => new external_value(PARAM_RAW, 'An arbitrary ID code number perhaps from the institution', VALUE_OPTIONAL),
 968             'interests'   => new external_value(PARAM_TEXT, 'user interests (separated by commas)', VALUE_OPTIONAL),
 969             'firstaccess' => new external_value(PARAM_INT, 'first access to the site (0 if never)', VALUE_OPTIONAL),
 970             'lastaccess'  => new external_value(PARAM_INT, 'last access to the site (0 if never)', VALUE_OPTIONAL),
 971             'auth'        => new external_value(PARAM_PLUGIN, 'Auth plugins include manual, ldap, imap, etc', VALUE_OPTIONAL),
 972             'confirmed'   => new external_value(PARAM_INT, 'Active user: 1 if confirmed, 0 otherwise', VALUE_OPTIONAL),
 973             'lang'        => new external_value(PARAM_SAFEDIR, 'Language code such as "en", must exist on server', VALUE_OPTIONAL),
 974             'calendartype' => new external_value(PARAM_PLUGIN, 'Calendar type such as "gregorian", must exist on server', VALUE_OPTIONAL),
 975             'theme'       => new external_value(PARAM_PLUGIN, 'Theme name such as "standard", must exist on server', VALUE_OPTIONAL),
 976             'timezone'    => new external_value(PARAM_TIMEZONE, 'Timezone code such as Australia/Perth, or 99 for default', VALUE_OPTIONAL),
 977             'mailformat'  => new external_value(PARAM_INT, 'Mail format code is 0 for plain text, 1 for HTML etc', VALUE_OPTIONAL),
 978             'description' => new external_value(PARAM_RAW, 'User profile description', VALUE_OPTIONAL),
 979             'descriptionformat' => new external_format_value('description', VALUE_OPTIONAL),
 980             'city'        => new external_value(PARAM_NOTAGS, 'Home city of the user', VALUE_OPTIONAL),
 981             'url'         => new external_value(PARAM_URL, 'URL of the user', VALUE_OPTIONAL),
 982             'country'     => new external_value(PARAM_ALPHA, 'Home country code of the user, such as AU or CZ', VALUE_OPTIONAL),
 983             'profileimageurlsmall' => new external_value(PARAM_URL, 'User image profile URL - small version'),
 984             'profileimageurl' => new external_value(PARAM_URL, 'User image profile URL - big version'),
 985             'customfields' => new external_multiple_structure(
 986                 new external_single_structure(
 987                     array(
 988                         'type'  => new external_value(PARAM_ALPHANUMEXT, 'The type of the custom field - text field, checkbox...'),
 989                         'value' => new external_value(PARAM_RAW, 'The value of the custom field'),
 990                         'name' => new external_value(PARAM_RAW, 'The name of the custom field'),
 991                         'shortname' => new external_value(PARAM_RAW, 'The shortname of the custom field - to be able to build the field class in the code'),
 992                     )
 993                 ), 'User custom fields (also known as user profile fields)', VALUE_OPTIONAL),
 994             'preferences' => new external_multiple_structure(
 995                 new external_single_structure(
 996                     array(
 997                         'name'  => new external_value(PARAM_ALPHANUMEXT, 'The name of the preferences'),
 998                         'value' => new external_value(PARAM_RAW, 'The value of the custom field'),
 999                     )
1000             ), 'Users preferences', VALUE_OPTIONAL)
1001         );
1002         if (!empty($additionalfields)) {
1003             $userfields = array_merge($userfields, $additionalfields);
1004         }
1005         return new external_single_structure($userfields);
1006     }
1007
1008     /**
1009      * Returns description of method parameters
1010      *
1011      * @return external_function_parameters
1012      * @since Moodle 2.6
1013      */
1014     public static function add_user_private_files_parameters() {
1015         return new external_function_parameters(
1016             array(
1017                 'draftid' => new external_value(PARAM_INT, 'draft area id')
1018             )
1019         );
1020     }
1021
1022     /**
1023      * Copy files from a draft area to users private files area.
1024      *
1025      * @throws invalid_parameter_exception
1026      * @param int $draftid Id of a draft area containing files.
1027      * @return array An array of warnings
1028      * @since Moodle 2.6
1029      */
1030     public static function add_user_private_files($draftid) {
1031         global $CFG, $USER, $DB;
1032
1033         require_once($CFG->dirroot . "/user/lib.php");
1034         $params = self::validate_parameters(self::add_user_private_files_parameters(), array('draftid' => $draftid));
1035
1036         if (isguestuser()) {
1037             throw new invalid_parameter_exception('Guest users cannot upload files');
1038         }
1039
1040         $context = context_user::instance($USER->id);
1041         require_capability('moodle/user:manageownfiles', $context);
1042
1043         $maxbytes = $CFG->userquota;
1044         $maxareabytes = $CFG->userquota;
1045         if (has_capability('moodle/user:ignoreuserquota', $context)) {
1046             $maxbytes = USER_CAN_IGNORE_FILE_SIZE_LIMITS;
1047             $maxareabytes = FILE_AREA_MAX_BYTES_UNLIMITED;
1048         }
1049
1050         $options = array('subdirs' => 1,
1051                          'maxbytes' => $maxbytes,
1052                          'maxfiles' => -1,
1053                          'accepted_types' => '*',
1054                          'areamaxbytes' => $maxareabytes);
1055
1056         file_save_draft_area_files($draftid, $context->id, 'user', 'private', 0, $options);
1057
1058         return null;
1059     }
1060
1061     /**
1062      * Returns description of method result value
1063      *
1064      * @return external_description
1065      * @since Moodle 2.2
1066      */
1067     public static function add_user_private_files_returns() {
1068         return null;
1069     }
1070
1071     /**
1072      * Returns description of method parameters.
1073      *
1074      * @return external_function_parameters
1075      * @since Moodle 2.6
1076      */
1077     public static function add_user_device_parameters() {
1078         return new external_function_parameters(
1079             array(
1080                 'appid'     => new external_value(PARAM_NOTAGS, 'the app id, usually something like com.moodle.moodlemobile'),
1081                 'name'      => new external_value(PARAM_NOTAGS, 'the device name, \'occam\' or \'iPhone\' etc.'),
1082                 'model'     => new external_value(PARAM_NOTAGS, 'the device model \'Nexus4\' or \'iPad1,1\' etc.'),
1083                 'platform'  => new external_value(PARAM_NOTAGS, 'the device platform \'iOS\' or \'Android\' etc.'),
1084                 'version'   => new external_value(PARAM_NOTAGS, 'the device version \'6.1.2\' or \'4.2.2\' etc.'),
1085                 'pushid'    => new external_value(PARAM_RAW, 'the device PUSH token/key/identifier/registration id'),
1086                 'uuid'      => new external_value(PARAM_RAW, 'the device UUID')
1087             )
1088         );
1089     }
1090
1091     /**
1092      * Add a user device in Moodle database (for PUSH notifications usually).
1093      *
1094      * @throws moodle_exception
1095      * @param string $appid The app id, usually something like com.moodle.moodlemobile.
1096      * @param string $name The device name, occam or iPhone etc.
1097      * @param string $model The device model Nexus4 or iPad1.1 etc.
1098      * @param string $platform The device platform iOs or Android etc.
1099      * @param string $version The device version 6.1.2 or 4.2.2 etc.
1100      * @param string $pushid The device PUSH token/key/identifier/registration id.
1101      * @param string $uuid The device UUID.
1102      * @return array List of possible warnings.
1103      * @since Moodle 2.6
1104      */
1105     public static function add_user_device($appid, $name, $model, $platform, $version, $pushid, $uuid) {
1106         global $CFG, $USER, $DB;
1107         require_once($CFG->dirroot . "/user/lib.php");
1108
1109         $params = self::validate_parameters(self::add_user_device_parameters(),
1110                 array('appid' => $appid,
1111                       'name' => $name,
1112                       'model' => $model,
1113                       'platform' => $platform,
1114                       'version' => $version,
1115                       'pushid' => $pushid,
1116                       'uuid' => $uuid
1117                       ));
1118
1119         $warnings = array();
1120
1121         // Prevent duplicate keys for users.
1122         if ($DB->get_record('user_devices', array('pushid' => $params['pushid'], 'userid' => $USER->id))) {
1123             $warnings['warning'][] = array(
1124                 'item' => $params['pushid'],
1125                 'warningcode' => 'existingkeyforthisuser',
1126                 'message' => 'This key is already stored for this user'
1127             );
1128             return $warnings;
1129         }
1130
1131         // Notice that we can have multiple devices because previously it was allowed to have repeated ones.
1132         // Since we don't have a clear way to decide which one is the more appropiate, we update all.
1133         if ($userdevices = $DB->get_records('user_devices', array('uuid' => $params['uuid'],
1134                 'appid' => $params['appid'], 'userid' => $USER->id))) {
1135
1136             foreach ($userdevices as $userdevice) {
1137                 $userdevice->version    = $params['version'];   // Maybe the user upgraded the device.
1138                 $userdevice->pushid     = $params['pushid'];
1139                 $userdevice->timemodified  = time();
1140                 $DB->update_record('user_devices', $userdevice);
1141             }
1142
1143         } else {
1144             $userdevice = new stdclass;
1145             $userdevice->userid     = $USER->id;
1146             $userdevice->appid      = $params['appid'];
1147             $userdevice->name       = $params['name'];
1148             $userdevice->model      = $params['model'];
1149             $userdevice->platform   = $params['platform'];
1150             $userdevice->version    = $params['version'];
1151             $userdevice->pushid     = $params['pushid'];
1152             $userdevice->uuid       = $params['uuid'];
1153             $userdevice->timecreated  = time();
1154             $userdevice->timemodified = $userdevice->timecreated;
1155
1156             if (!$DB->insert_record('user_devices', $userdevice)) {
1157                 throw new moodle_exception("There was a problem saving in the database the device with key: " . $params['pushid']);
1158             }
1159         }
1160
1161         return $warnings;
1162     }
1163
1164     /**
1165      * Returns description of method result value.
1166      *
1167      * @return external_multiple_structure
1168      * @since Moodle 2.6
1169      */
1170     public static function add_user_device_returns() {
1171         return new external_multiple_structure(
1172            new external_warnings()
1173         );
1174     }
1175
1176     /**
1177      * Returns description of method parameters.
1178      *
1179      * @return external_function_parameters
1180      * @since Moodle 2.9
1181      */
1182     public static function remove_user_device_parameters() {
1183         return new external_function_parameters(
1184             array(
1185                 'uuid'  => new external_value(PARAM_RAW, 'the device UUID'),
1186                 'appid' => new external_value(PARAM_NOTAGS,
1187                                                 'the app id, if empty devices matching the UUID for the user will be removed',
1188                                                 VALUE_DEFAULT, ''),
1189             )
1190         );
1191     }
1192
1193     /**
1194      * Remove a user device from the Moodle database (for PUSH notifications usually).
1195      *
1196      * @param string $uuid The device UUID.
1197      * @param string $appid The app id, opitonal parameter. If empty all the devices fmatching the UUID or the user will be removed.
1198      * @return array List of possible warnings and removal status.
1199      * @since Moodle 2.9
1200      */
1201     public static function remove_user_device($uuid, $appid = "") {
1202         global $CFG;
1203         require_once($CFG->dirroot . "/user/lib.php");
1204
1205         $params = self::validate_parameters(self::remove_user_device_parameters(), array('uuid' => $uuid, 'appid' => $appid));
1206
1207         $context = context_system::instance();
1208         self::validate_context($context);
1209
1210         // Warnings array, it can be empty at the end but is mandatory.
1211         $warnings = array();
1212
1213         $removed = user_remove_user_device($params['uuid'], $params['appid']);
1214
1215         if (!$removed) {
1216             $warnings[] = array(
1217                 'item' => $params['uuid'],
1218                 'warningcode' => 'devicedoesnotexist',
1219                 'message' => 'The device doesn\'t exists in the database'
1220             );
1221         }
1222
1223         $result = array(
1224             'removed' => $removed,
1225             'warnings' => $warnings
1226         );
1227
1228         return $result;
1229     }
1230
1231     /**
1232      * Returns description of method result value.
1233      *
1234      * @return external_multiple_structure
1235      * @since Moodle 2.9
1236      */
1237     public static function remove_user_device_returns() {
1238         return new external_single_structure(
1239             array(
1240                 'removed' => new external_value(PARAM_BOOL, 'True if removed, false if not removed because it doesn\'t exists'),
1241                 'warnings' => new external_warnings(),
1242             )
1243         );
1244     }
1245
1246     /**
1247      * Returns description of method parameters
1248      *
1249      * @return external_function_parameters
1250      * @since Moodle 2.9
1251      */
1252     public static function view_user_list_parameters() {
1253         return new external_function_parameters(
1254             array(
1255                 'courseid' => new external_value(PARAM_INT, 'id of the course, 0 for site')
1256             )
1257         );
1258     }
1259
1260     /**
1261      * Trigger the user_list_viewed event.
1262      *
1263      * @param int $courseid id of course
1264      * @return array of warnings and status result
1265      * @since Moodle 2.9
1266      * @throws moodle_exception
1267      */
1268     public static function view_user_list($courseid) {
1269         global $CFG;
1270         require_once($CFG->dirroot . "/user/lib.php");
1271
1272         $params = self::validate_parameters(self::view_user_list_parameters(),
1273                                             array(
1274                                                 'courseid' => $courseid
1275                                             ));
1276
1277         $warnings = array();
1278
1279         if (empty($params['courseid'])) {
1280             $params['courseid'] = SITEID;
1281         }
1282
1283         $course = get_course($params['courseid']);
1284
1285         if ($course->id == SITEID) {
1286             $context = context_system::instance();
1287         } else {
1288             $context = context_course::instance($course->id);
1289         }
1290         self::validate_context($context);
1291
1292         if ($course->id == SITEID) {
1293             require_capability('moodle/site:viewparticipants', $context);
1294         } else {
1295             require_capability('moodle/course:viewparticipants', $context);
1296         }
1297
1298         user_list_view($course, $context);
1299
1300         $result = array();
1301         $result['status'] = true;
1302         $result['warnings'] = $warnings;
1303         return $result;
1304     }
1305
1306     /**
1307      * Returns description of method result value
1308      *
1309      * @return external_description
1310      * @since Moodle 2.9
1311      */
1312     public static function view_user_list_returns() {
1313         return new external_single_structure(
1314             array(
1315                 'status' => new external_value(PARAM_BOOL, 'status: true if success'),
1316                 'warnings' => new external_warnings()
1317             )
1318         );
1319     }
1320
1321     /**
1322      * Returns description of method parameters
1323      *
1324      * @return external_function_parameters
1325      * @since Moodle 2.9
1326      */
1327     public static function view_user_profile_parameters() {
1328         return new external_function_parameters(
1329             array(
1330                 'userid' => new external_value(PARAM_INT, 'id of the user, 0 for current user', VALUE_REQUIRED),
1331                 'courseid' => new external_value(PARAM_INT, 'id of the course, default site course', VALUE_DEFAULT, 0)
1332             )
1333         );
1334     }
1335
1336     /**
1337      * Trigger the user profile viewed event.
1338      *
1339      * @param int $userid id of user
1340      * @param int $courseid id of course
1341      * @return array of warnings and status result
1342      * @since Moodle 2.9
1343      * @throws moodle_exception
1344      */
1345     public static function view_user_profile($userid, $courseid = 0) {
1346         global $CFG, $USER;
1347         require_once($CFG->dirroot . "/user/profile/lib.php");
1348
1349         $params = self::validate_parameters(self::view_user_profile_parameters(),
1350                                             array(
1351                                                 'userid' => $userid,
1352                                                 'courseid' => $courseid
1353                                             ));
1354
1355         $warnings = array();
1356
1357         if (empty($params['userid'])) {
1358             $params['userid'] = $USER->id;
1359         }
1360
1361         if (empty($params['courseid'])) {
1362             $params['courseid'] = SITEID;
1363         }
1364
1365         $course = get_course($params['courseid']);
1366         $user = core_user::get_user($params['userid'], '*', MUST_EXIST);
1367
1368         if ($user->deleted) {
1369             throw new moodle_exception('userdeleted');
1370         }
1371         if (isguestuser($user)) {
1372             // Can not view profile of guest - thre is nothing to see there.
1373             throw new moodle_exception('invaliduserid');
1374         }
1375
1376         if ($course->id == SITEID) {
1377             $coursecontext = context_system::instance();;
1378         } else {
1379             $coursecontext = context_course::instance($course->id);
1380         }
1381         self::validate_context($coursecontext);
1382
1383         $currentuser = $USER->id == $user->id;
1384         $usercontext = context_user::instance($user->id);
1385
1386         if (!$currentuser and
1387                 !has_capability('moodle/user:viewdetails', $coursecontext) and
1388                 !has_capability('moodle/user:viewdetails', $usercontext)) {
1389             throw new moodle_exception('cannotviewprofile');
1390         }
1391
1392         // Case like user/profile.php.
1393         if ($course->id == SITEID) {
1394             profile_view($user, $usercontext);
1395         } else {
1396             // Case like user/view.php.
1397             if (!$currentuser and !is_enrolled($coursecontext, $user->id)) {
1398                 throw new moodle_exception('notenrolledprofile');
1399             }
1400
1401             profile_view($user, $coursecontext, $course);
1402         }
1403
1404         $result = array();
1405         $result['status'] = true;
1406         $result['warnings'] = $warnings;
1407         return $result;
1408     }
1409
1410     /**
1411      * Returns description of method result value
1412      *
1413      * @return external_description
1414      * @since Moodle 2.9
1415      */
1416     public static function view_user_profile_returns() {
1417         return new external_single_structure(
1418             array(
1419                 'status' => new external_value(PARAM_BOOL, 'status: true if success'),
1420                 'warnings' => new external_warnings()
1421             )
1422         );
1423     }
1424
1425 }
1426
1427  /**
1428   * Deprecated user external functions
1429   *
1430   * @package    core_user
1431   * @copyright  2009 Petr Skodak
1432   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
1433   * @since Moodle 2.0
1434   * @deprecated Moodle 2.2 MDL-29106 - Please do not use this class any more.
1435   * @see core_user_external
1436   */
1437 class moodle_user_external extends external_api {
1438
1439     /**
1440      * Returns description of method parameters
1441      *
1442      * @return external_function_parameters
1443      * @since Moodle 2.0
1444      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1445      * @see core_user_external::create_users_parameters()
1446      */
1447     public static function create_users_parameters() {
1448         return core_user_external::create_users_parameters();
1449     }
1450
1451     /**
1452      * Create one or more users
1453      *
1454      * @param array $users  An array of users to create.
1455      * @return array An array of arrays
1456      * @since Moodle 2.0
1457      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1458      * @see core_user_external::create_users()
1459      */
1460     public static function create_users($users) {
1461         return core_user_external::create_users($users);
1462     }
1463
1464     /**
1465      * Returns description of method result value
1466      *
1467      * @return external_description
1468      * @since Moodle 2.0
1469      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1470      * @see core_user_external::create_users_returns()
1471      */
1472     public static function create_users_returns() {
1473         return core_user_external::create_users_returns();
1474     }
1475
1476     /**
1477      * Marking the method as deprecated.
1478      *
1479      * @return bool
1480      */
1481     public static function create_users_is_deprecated() {
1482         return true;
1483     }
1484
1485     /**
1486      * Returns description of method parameters
1487      *
1488      * @return external_function_parameters
1489      * @since Moodle 2.0
1490      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1491      * @see core_user_external::delete_users_parameters()
1492      */
1493     public static function delete_users_parameters() {
1494         return core_user_external::delete_users_parameters();
1495     }
1496
1497     /**
1498      * Delete users
1499      *
1500      * @param array $userids
1501      * @return null
1502      * @since Moodle 2.0
1503      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1504      * @see core_user_external::delete_users()
1505      */
1506     public static function delete_users($userids) {
1507         return core_user_external::delete_users($userids);
1508     }
1509
1510     /**
1511      * Returns description of method result value
1512      *
1513      * @return null
1514      * @since Moodle 2.0
1515      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1516      * @see core_user_external::delete_users_returns()
1517      */
1518     public static function delete_users_returns() {
1519         return core_user_external::delete_users_returns();
1520     }
1521
1522     /**
1523      * Marking the method as deprecated.
1524      *
1525      * @return bool
1526      */
1527     public static function delete_users_is_deprecated() {
1528         return true;
1529     }
1530
1531     /**
1532      * Returns description of method parameters
1533      *
1534      * @return external_function_parameters
1535      * @since Moodle 2.0
1536      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1537      * @see core_user_external::update_users_parameters()
1538      */
1539     public static function update_users_parameters() {
1540         return core_user_external::update_users_parameters();
1541     }
1542
1543     /**
1544      * Update users
1545      *
1546      * @param array $users
1547      * @return null
1548      * @since Moodle 2.0
1549      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1550      * @see core_user_external::update_users()
1551      */
1552     public static function update_users($users) {
1553         return core_user_external::update_users($users);
1554     }
1555
1556     /**
1557      * Returns description of method result value
1558      *
1559      * @return null
1560      * @since Moodle 2.0
1561      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1562      * @see core_user_external::update_users_returns()
1563      */
1564     public static function update_users_returns() {
1565         return core_user_external::update_users_returns();
1566     }
1567
1568     /**
1569      * Marking the method as deprecated.
1570      *
1571      * @return bool
1572      */
1573     public static function update_users_is_deprecated() {
1574         return true;
1575     }
1576
1577     /**
1578      * Returns description of method parameters
1579      *
1580      * @return external_function_parameters
1581      * @since Moodle 2.0
1582      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1583      * @see core_user_external::get_users_by_id_parameters()
1584      */
1585     public static function get_users_by_id_parameters() {
1586         return core_user_external::get_users_by_id_parameters();
1587     }
1588
1589     /**
1590      * Get user information
1591      * - This function is matching the permissions of /user/profil.php
1592      * - It is also matching some permissions from /user/editadvanced.php for the following fields:
1593      *   auth, confirmed, idnumber, lang, theme, timezone, mailformat
1594      *
1595      * @param array $userids  array of user ids
1596      * @return array An array of arrays describing users
1597      * @since Moodle 2.0
1598      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1599      * @see core_user_external::get_users_by_id()
1600      */
1601     public static function get_users_by_id($userids) {
1602         return core_user_external::get_users_by_id($userids);
1603     }
1604
1605     /**
1606      * Returns description of method result value
1607      *
1608      * @return external_description
1609      * @since Moodle 2.0
1610      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1611      * @see core_user_external::get_users_by_id_returns()
1612      */
1613     public static function get_users_by_id_returns() {
1614         return core_user_external::get_users_by_id_returns();
1615     }
1616
1617     /**
1618      * Marking the method as deprecated.
1619      *
1620      * @return bool
1621      */
1622     public static function get_users_by_id_is_deprecated() {
1623         return true;
1624     }
1625
1626     /**
1627      * Returns description of method parameters
1628      *
1629      * @return external_function_parameters
1630      * @since Moodle 2.1
1631      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1632      * @see core_user_external::get_course_user_profiles_parameters()
1633      */
1634     public static function get_course_participants_by_id_parameters() {
1635         return core_user_external::get_course_user_profiles_parameters();
1636     }
1637
1638     /**
1639      * Get course participant's details
1640      *
1641      * @param array $userlist  array of user ids and according course ids
1642      * @return array An array of arrays describing course participants
1643      * @since Moodle 2.1
1644      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1645      * @see core_user_external::get_course_user_profiles()
1646      */
1647     public static function get_course_participants_by_id($userlist) {
1648         return core_user_external::get_course_user_profiles($userlist);
1649     }
1650
1651     /**
1652      * Returns description of method result value
1653      *
1654      * @return external_description
1655      * @since Moodle 2.1
1656      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1657      * @see core_user_external::get_course_user_profiles_returns()
1658      */
1659     public static function get_course_participants_by_id_returns() {
1660         return core_user_external::get_course_user_profiles_returns();
1661     }
1662
1663     /**
1664      * Marking the method as deprecated.
1665      *
1666      * @return bool
1667      */
1668     public static function get_course_participants_by_id_is_deprecated() {
1669         return true;
1670     }
1671
1672     /**
1673      * Returns description of method parameters
1674      *
1675      * @return external_function_parameters
1676      * @since Moodle 2.1
1677      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1678      * @see core_enrol_external::get_enrolled_users_parameters()
1679      */
1680     public static function get_users_by_courseid_parameters() {
1681         global $CFG;
1682         require_once($CFG->dirroot . '/enrol/externallib.php');
1683         return core_enrol_external::get_enrolled_users_parameters();
1684     }
1685
1686     /**
1687      * Get course participants details
1688      *
1689      * @param int $courseid  course id
1690      * @param array $options options {
1691      *                                'name' => option name
1692      *                                'value' => option value
1693      *                               }
1694      * @return array An array of users
1695      * @since Moodle 2.1
1696      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1697      * @see core_enrol_external::get_enrolled_users()
1698      */
1699     public static function get_users_by_courseid($courseid, $options = array()) {
1700         global $CFG;
1701         require_once($CFG->dirroot . '/enrol/externallib.php');
1702         return core_enrol_external::get_enrolled_users($courseid, $options);
1703     }
1704     /**
1705      * Returns description of method result value
1706      *
1707      * @return external_description
1708      * @since Moodle 2.1
1709      * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
1710      * @see core_enrol_external::get_enrolled_users_returns()
1711      */
1712     public static function get_users_by_courseid_returns() {
1713         global $CFG;
1714         require_once($CFG->dirroot . '/enrol/externallib.php');
1715         return core_enrol_external::get_enrolled_users_returns();
1716     }
1717
1718     /**
1719      * Marking the method as deprecated.
1720      *
1721      * @return bool
1722      */
1723     public static function get_users_by_courseid_is_deprecated() {
1724         return true;
1725     }
1726 }