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Differences Between: [Versions 310 and 401] [Versions 311 and 401] [Versions 39 and 401] [Versions 400 and 401] [Versions 401 and 402] [Versions 401 and 403]

   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  /**
  19   * external API for mobile web services
  20   *
  21   * @package    core_webservice
  22   * @category   external
  23   * @copyright  2011 Jerome Mouneyrac <jerome@moodle.com>
  24   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25   */
  26  
  27  defined('MOODLE_INTERNAL') || die;
  28  
  29  require_once("$CFG->libdir/externallib.php");
  30  
  31  /**
  32   * Web service related functions
  33   *
  34   * @package    core_webservice
  35   * @category   external
  36   * @copyright  2011 Jerome Mouneyrac <jerome@moodle.com>
  37   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38   * @since Moodle 2.2
  39   */
  40  class core_webservice_external extends external_api {
  41  
  42      /**
  43       * Returns description of method parameters
  44       *
  45       * @return external_function_parameters
  46       * @since Moodle 2.2
  47       */
  48      public static function get_site_info_parameters() {
  49          return new external_function_parameters(
  50              array('serviceshortnames' => new external_multiple_structure (
  51                  new external_value(
  52                      PARAM_ALPHANUMEXT,
  53                      'service shortname'),
  54                      'DEPRECATED PARAMETER - it was a design error in the original implementation. \
  55                      It is ignored now. (parameter kept for backward compatibility)',
  56                      VALUE_DEFAULT,
  57                      array()
  58                  ),
  59              )
  60          );
  61      }
  62  
  63      /**
  64       * Return user information including profile picture + basic site information
  65       * Note:
  66       * - no capability checking because we return only known information about logged user
  67       *
  68       * @param array $serviceshortnames - DEPRECATED PARAMETER - values will be ignored -
  69       * it was an original design error, we keep for backward compatibility.
  70       * @return array site info
  71       * @since Moodle 2.2
  72       */
  73      public static function get_site_info($serviceshortnames = array()) {
  74          global $USER, $SITE, $CFG, $DB, $PAGE;
  75  
  76          $params = self::validate_parameters(self::get_site_info_parameters(),
  77                        array('serviceshortnames'=>$serviceshortnames));
  78  
  79          $context = context_user::instance($USER->id);
  80          $systemcontext = context_system::instance();
  81  
  82          $userpicture = new user_picture($USER);
  83          $userpicture->size = 1; // Size f1.
  84          $profileimageurl = $userpicture->get_url($PAGE);
  85  
  86          // Site information.
  87          $siteinfo =  array(
  88              'sitename' => external_format_string($SITE->fullname, $systemcontext),
  89              'siteurl' => $CFG->wwwroot,
  90              'username' => $USER->username,
  91              'firstname' => $USER->firstname,
  92              'lastname' => $USER->lastname,
  93              'fullname' => fullname($USER),
  94              'lang' => clean_param(current_language(), PARAM_LANG),
  95              'userid' => $USER->id,
  96              'userpictureurl' => $profileimageurl->out(false),
  97              'siteid' => SITEID
  98          );
  99  
 100          // Retrieve the service and functions from the web service linked to the token
 101          // If you call this function directly from external (not a web service call),
 102          // then it will still return site info without information about a service
 103          // Note: wsusername/wspassword ws authentication is not supported.
 104          $functions = array();
 105          if ($CFG->enablewebservices) { // No need to check token if web service are disabled and not a ws call.
 106              $token = optional_param('wstoken', '', PARAM_ALPHANUM);
 107  
 108              if (!empty($token)) { // No need to run if not a ws call.
 109                  // Retrieve service shortname.
 110                  $servicesql = 'SELECT s.*
 111                                 FROM {external_services} s, {external_tokens} t
 112                                 WHERE t.externalserviceid = s.id AND token = ? AND t.userid = ? AND s.enabled = 1';
 113                  $service = $DB->get_record_sql($servicesql, array($token, $USER->id));
 114  
 115                  $siteinfo['downloadfiles'] = $service->downloadfiles;
 116                  $siteinfo['uploadfiles'] = $service->uploadfiles;
 117  
 118                  if (!empty($service)) {
 119                      // Return the release and version number for web service users only.
 120                      $siteinfo['release'] = $CFG->release;
 121                      $siteinfo['version'] = $CFG->version;
 122                      // Retrieve the functions.
 123                      $functionssql = "SELECT f.*
 124                              FROM {external_functions} f, {external_services_functions} sf
 125                              WHERE f.name = sf.functionname AND sf.externalserviceid = ?";
 126                      $functions = $DB->get_records_sql($functionssql, array($service->id));
 127                  } else {
 128                      throw new coding_exception('No service found in get_site_info: something is buggy, \
 129                                                  it should have fail at the ws server authentication layer.');
 130                  }
 131              }
 132          }
 133  
 134          // Build up the returned values of the list of functions.
 135          $componentversions = array();
 136          $availablefunctions = array();
 137          foreach ($functions as $function) {
 138              $functioninfo = array();
 139              $functioninfo['name'] = $function->name;
 140              if ($function->component == 'moodle' || $function->component == 'core') {
 141                  $version = $CFG->version; // Moodle version.
 142              } else {
 143                  $versionpath = core_component::get_component_directory($function->component).'/version.php';
 144                  if (is_readable($versionpath)) {
 145                      // We store the component version once retrieved (so we don't load twice the version.php).
 146                      if (!isset($componentversions[$function->component])) {
 147                          $plugin = new stdClass();
 148                          include($versionpath);
 149                          $componentversions[$function->component] = $plugin->version;
 150                          $version = $plugin->version;
 151                      } else {
 152                          $version = $componentversions[$function->component];
 153                      }
 154                  } else {
 155                      // Function component should always have a version.php,
 156                      // otherwise the function should have been described with component => 'moodle'.
 157                      throw new moodle_exception('missingversionfile', 'webservice', '', $function->component);
 158                  }
 159              }
 160              $functioninfo['version'] = $version;
 161              $availablefunctions[] = $functioninfo;
 162          }
 163  
 164          $siteinfo['functions'] = $availablefunctions;
 165  
 166          // Mobile CSS theme and alternative login url.
 167          $siteinfo['mobilecssurl'] = !empty($CFG->mobilecssurl) ? $CFG->mobilecssurl : '';
 168  
 169          // Retrieve some advanced features. Only enable/disable ones (bool).
 170          $advancedfeatures = array("usecomments", "usetags", "enablenotes", "messaging", "enableblogs",
 171                                      "enablecompletion", "enablebadges", "messagingallusers", "enablecustomreports");
 172          foreach ($advancedfeatures as $feature) {
 173              if (isset($CFG->{$feature})) {
 174                  $siteinfo['advancedfeatures'][] = array(
 175                      'name' => $feature,
 176                      'value' => (int) $CFG->{$feature}
 177                  );
 178              }
 179          }
 180          // Special case mnet_dispatcher_mode.
 181          $siteinfo['advancedfeatures'][] = array(
 182              'name' => 'mnet_dispatcher_mode',
 183              'value' => ($CFG->mnet_dispatcher_mode == 'strict') ? 1 : 0
 184          );
 185  
 186          // User can manage own files.
 187          $siteinfo['usercanmanageownfiles'] = has_capability('moodle/user:manageownfiles', $context);
 188  
 189          // User quota. 0 means user can ignore the quota.
 190          $siteinfo['userquota'] = 0;
 191          if (!has_capability('moodle/user:ignoreuserquota', $context)) {
 192              $siteinfo['userquota'] = (int) $CFG->userquota; // Cast to int to ensure value is not higher than PHP_INT_MAX.
 193          }
 194  
 195          // User max upload file size. -1 means the user can ignore the upload file size.
 196          // Cast to int to ensure value is not higher than PHP_INT_MAX.
 197          $siteinfo['usermaxuploadfilesize'] = (int) get_user_max_upload_file_size($context, $CFG->maxbytes);
 198  
 199          // User home page.
 200          $siteinfo['userhomepage'] = get_home_page();
 201  
 202          // Calendar.
 203          $siteinfo['sitecalendartype'] = $CFG->calendartype;
 204          if (empty($USER->calendartype)) {
 205              $siteinfo['usercalendartype'] = $CFG->calendartype;
 206          } else {
 207              $siteinfo['usercalendartype'] = $USER->calendartype;
 208          }
 209          $siteinfo['userissiteadmin'] = is_siteadmin();
 210  
 211          // User key, to avoid using the WS token for fetching assets.
 212          $siteinfo['userprivateaccesskey'] = get_user_key('core_files', $USER->id);
 213  
 214          // Current theme.
 215          $siteinfo['theme'] = clean_param($PAGE->theme->name, PARAM_THEME);  // We always clean to avoid problem with old sites.
 216  
 217          $siteinfo['limitconcurrentlogins'] = (int) $CFG->limitconcurrentlogins;
 218          if (!empty($CFG->limitconcurrentlogins)) {
 219              // For performance, only when enabled.
 220              $siteinfo['usersessionscount'] = $DB->count_records('sessions', ['userid' => $USER->id]);
 221          }
 222  
 223          return $siteinfo;
 224      }
 225  
 226      /**
 227       * Returns description of method result value
 228       *
 229       * @return external_single_structure
 230       * @since Moodle 2.2
 231       */
 232      public static function get_site_info_returns() {
 233          return new external_single_structure(
 234              array(
 235                  'sitename'       => new external_value(PARAM_RAW, 'site name'),
 236                  'username'       => new external_value(PARAM_RAW, 'username'),
 237                  'firstname'      => new external_value(PARAM_TEXT, 'first name'),
 238                  'lastname'       => new external_value(PARAM_TEXT, 'last name'),
 239                  'fullname'       => new external_value(PARAM_TEXT, 'user full name'),
 240                  'lang'           => new external_value(PARAM_LANG, 'Current language.'),
 241                  'userid'         => new external_value(PARAM_INT, 'user id'),
 242                  'siteurl'        => new external_value(PARAM_RAW, 'site url'),
 243                  'userpictureurl' => new external_value(PARAM_URL, 'the user profile picture.
 244                      Warning: this url is the public URL that only works when forcelogin is set to NO and guestaccess is set to YES.
 245                      In order to retrieve user profile pictures independently of the Moodle config, replace "pluginfile.php" by
 246                      "webservice/pluginfile.php?token=WSTOKEN&file="
 247                      Of course the user can only see profile picture depending
 248                      on his/her permissions. Moreover it is recommended to use HTTPS too.'),
 249                  'functions'      => new external_multiple_structure(
 250                      new external_single_structure(
 251                          array(
 252                              'name' => new external_value(PARAM_RAW, 'function name'),
 253                              'version' => new external_value(PARAM_TEXT,
 254                                          'The version number of the component to which the function belongs')
 255                          ), 'functions that are available')
 256                      ),
 257                  'downloadfiles'  => new external_value(PARAM_INT, '1 if users are allowed to download files, 0 if not',
 258                                                         VALUE_OPTIONAL),
 259                  'uploadfiles'  => new external_value(PARAM_INT, '1 if users are allowed to upload files, 0 if not',
 260                                                         VALUE_OPTIONAL),
 261                  'release'  => new external_value(PARAM_TEXT, 'Moodle release number', VALUE_OPTIONAL),
 262                  'version'  => new external_value(PARAM_TEXT, 'Moodle version number', VALUE_OPTIONAL),
 263                  'mobilecssurl'  => new external_value(PARAM_URL, 'Mobile custom CSS theme', VALUE_OPTIONAL),
 264                  'advancedfeatures' => new external_multiple_structure(
 265                      new external_single_structure(
 266                          array(
 267                              'name'  => new external_value(PARAM_ALPHANUMEXT, 'feature name'),
 268                              'value' => new external_value(PARAM_INT, 'feature value. Usually 1 means enabled.')
 269                          ),
 270                          'Advanced features availability'
 271                      ),
 272                      'Advanced features availability',
 273                      VALUE_OPTIONAL
 274                  ),
 275                  'usercanmanageownfiles' => new external_value(PARAM_BOOL,
 276                                              'true if the user can manage his own files', VALUE_OPTIONAL),
 277                  'userquota' => new external_value(PARAM_INT,
 278                                      'user quota (bytes). 0 means user can ignore the quota', VALUE_OPTIONAL),
 279                  'usermaxuploadfilesize' => new external_value(PARAM_INT,
 280                                              'user max upload file size (bytes). -1 means the user can ignore the upload file size',
 281                                              VALUE_OPTIONAL),
 282                  'userhomepage' => new external_value(PARAM_INT,
 283                                                          'the default home page for the user: 0 for the site home, 1 for dashboard',
 284                                                          VALUE_OPTIONAL),
 285                  'userprivateaccesskey'  => new external_value(PARAM_ALPHANUM, 'Private user access key for fetching files.',
 286                      VALUE_OPTIONAL),
 287                  'siteid'  => new external_value(PARAM_INT, 'Site course ID', VALUE_OPTIONAL),
 288                  'sitecalendartype'  => new external_value(PARAM_PLUGIN, 'Calendar type set in the site.', VALUE_OPTIONAL),
 289                  'usercalendartype'  => new external_value(PARAM_PLUGIN, 'Calendar typed used by the user.', VALUE_OPTIONAL),
 290                  'userissiteadmin'  => new external_value(PARAM_BOOL, 'Whether the user is a site admin or not.', VALUE_OPTIONAL),
 291                  'theme'  => new external_value(PARAM_THEME, 'Current theme for the user.', VALUE_OPTIONAL),
 292                  'limitconcurrentlogins' => new external_value(PARAM_INT, 'Number of concurrent sessions allowed', VALUE_OPTIONAL),
 293                  'usersessionscount' => new external_value(PARAM_INT, 'Number of active sessions for current user.
 294                      Only returned when limitconcurrentlogins is used.', VALUE_OPTIONAL),
 295              )
 296          );
 297      }
 298  }