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

   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   * Unit tests for the webservice component.
  19   *
  20   * @package    core_webservice
  21   * @category   test
  22   * @copyright  2016 Jun Pataleta <jun@moodle.com>
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  namespace core_webservice;
  26  
  27  use webservice;
  28  
  29  defined('MOODLE_INTERNAL') || die();
  30  
  31  global $CFG;
  32  require_once($CFG->dirroot . '/webservice/lib.php');
  33  
  34  /**
  35   * Unit tests for the webservice component.
  36   *
  37   * @package    core_webservice
  38   * @category   test
  39   * @copyright  2016 Jun Pataleta <jun@moodle.com>
  40   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  41   */
  42  class lib_test extends \advanced_testcase {
  43  
  44      /**
  45       * Setup.
  46       */
  47      public function setUp(): void {
  48          // Calling parent is good, always.
  49          parent::setUp();
  50  
  51          // We always need enabled WS for this testcase.
  52          set_config('enablewebservices', '1');
  53      }
  54  
  55      /**
  56       * Test init_service_class().
  57       */
  58      public function test_init_service_class() {
  59          global $DB, $USER;
  60  
  61          $this->resetAfterTest(true);
  62  
  63          // Set current user.
  64          $this->setAdminUser();
  65  
  66          // Add a web service.
  67          $webservice = new \stdClass();
  68          $webservice->name = 'Test web service';
  69          $webservice->enabled = true;
  70          $webservice->restrictedusers = false;
  71          $webservice->component = 'moodle';
  72          $webservice->timecreated = time();
  73          $webservice->downloadfiles = true;
  74          $webservice->uploadfiles = true;
  75          $externalserviceid = $DB->insert_record('external_services', $webservice);
  76  
  77          // Add token.
  78          $externaltoken = new \stdClass();
  79          $externaltoken->token = 'testtoken';
  80          $externaltoken->tokentype = 0;
  81          $externaltoken->userid = $USER->id;
  82          $externaltoken->externalserviceid = $externalserviceid;
  83          $externaltoken->contextid = 1;
  84          $externaltoken->creatorid = $USER->id;
  85          $externaltoken->timecreated = time();
  86          $DB->insert_record('external_tokens', $externaltoken);
  87  
  88          // Add a function to the service.
  89          $wsmethod = new \stdClass();
  90          $wsmethod->externalserviceid = $externalserviceid;
  91          $wsmethod->functionname = 'core_course_get_contents';
  92          $DB->insert_record('external_services_functions', $wsmethod);
  93  
  94          // Initialise the dummy web service.
  95          $dummy = new webservice_dummy(WEBSERVICE_AUTHMETHOD_PERMANENT_TOKEN);
  96          // Set the token.
  97          $dummy->set_token($externaltoken->token);
  98          // Run the web service.
  99          $dummy->run();
 100          // Get service methods and structs.
 101          $servicemethods = $dummy->get_service_methods();
 102          $servicestructs = $dummy->get_service_structs();
 103          $this->assertNotEmpty($servicemethods);
 104          // The function core_course_get_contents should be only the only web service function in the moment.
 105          $this->assertEquals(1, count($servicemethods));
 106          // The function core_course_get_contents doesn't have a struct class, so the list of service structs should be empty.
 107          $this->assertEmpty($servicestructs);
 108  
 109          // Add other functions to the service.
 110          // The function core_comment_get_comments has one struct class in its output.
 111          $wsmethod->functionname = 'core_comment_get_comments';
 112          $DB->insert_record('external_services_functions', $wsmethod);
 113          // The function core_grades_update_grades has one struct class in its input.
 114          $wsmethod->functionname = 'core_grades_update_grades';
 115          $DB->insert_record('external_services_functions', $wsmethod);
 116  
 117          // Run the web service again.
 118          $dummy->run();
 119          // Get service methods and structs.
 120          $servicemethods = $dummy->get_service_methods();
 121          $servicestructs = $dummy->get_service_structs();
 122          $this->assertEquals(3, count($servicemethods));
 123          $this->assertEquals(2, count($servicestructs));
 124  
 125          // Check the contents of service methods.
 126          foreach ($servicemethods as $method) {
 127              // Get the external function info.
 128              $function = \external_api::external_function_info($method->name);
 129  
 130              // Check input params.
 131              foreach ($function->parameters_desc->keys as $name => $keydesc) {
 132                  $this->check_params($method->inputparams[$name]['type'], $keydesc, $servicestructs);
 133              }
 134  
 135              // Check output params.
 136              $this->check_params($method->outputparams['return']['type'], $function->returns_desc, $servicestructs);
 137  
 138              // Check description.
 139              $this->assertEquals($function->description, $method->description);
 140          }
 141      }
 142  
 143      /**
 144       * Tests update_token_lastaccess() function.
 145       *
 146       * @throws dml_exception
 147       */
 148      public function test_update_token_lastaccess() {
 149          global $DB;
 150  
 151          $this->resetAfterTest(true);
 152  
 153          // Set current user.
 154          $this->setAdminUser();
 155  
 156          // Add a web service.
 157          $webservice = new \stdClass();
 158          $webservice->name = 'Test web service';
 159          $webservice->enabled = true;
 160          $webservice->restrictedusers = false;
 161          $webservice->component = 'moodle';
 162          $webservice->timecreated = time();
 163          $webservice->downloadfiles = true;
 164          $webservice->uploadfiles = true;
 165          $DB->insert_record('external_services', $webservice);
 166  
 167          // Add token.
 168          $tokenstr = external_create_service_token($webservice->name, \context_system::instance()->id);
 169          $token = $DB->get_record('external_tokens', ['token' => $tokenstr]);
 170  
 171          // Trigger last access once (at current time).
 172          webservice::update_token_lastaccess($token);
 173  
 174          // Check last access.
 175          $token = $DB->get_record('external_tokens', ['token' => $tokenstr]);
 176          $this->assertLessThan(5, abs(time() - $token->lastaccess));
 177  
 178          // Try setting it to +1 second. This should not update yet.
 179          $before = (int)$token->lastaccess;
 180          webservice::update_token_lastaccess($token, $before + 1);
 181          $token = $DB->get_record('external_tokens', ['token' => $tokenstr]);
 182          $this->assertEquals($before, $token->lastaccess);
 183  
 184          // To -1000 seconds. This should not update.
 185          webservice::update_token_lastaccess($token, $before - 1000);
 186          $token = $DB->get_record('external_tokens', ['token' => $tokenstr]);
 187          $this->assertEquals($before, $token->lastaccess);
 188  
 189          // To +59 seconds. This should also not quite update.
 190          webservice::update_token_lastaccess($token, $before + 59);
 191          $token = $DB->get_record('external_tokens', ['token' => $tokenstr]);
 192          $this->assertEquals($before, $token->lastaccess);
 193  
 194          // Finally to +60 seconds, where it should update.
 195          webservice::update_token_lastaccess($token, $before + 60);
 196          $token = $DB->get_record('external_tokens', ['token' => $tokenstr]);
 197          $this->assertEquals($before + 60, $token->lastaccess);
 198      }
 199  
 200      /**
 201       * Tests for the {@see webservice::get_missing_capabilities_by_users()} implementation.
 202       */
 203      public function test_get_missing_capabilities_by_users() {
 204          global $DB;
 205  
 206          $this->resetAfterTest(true);
 207          $wsman = new webservice();
 208  
 209          $user1 = $this->getDataGenerator()->create_user();
 210          $user2 = $this->getDataGenerator()->create_user();
 211          $user3 = $this->getDataGenerator()->create_user();
 212  
 213          // Add a test web service.
 214          $serviceid = $wsman->add_external_service((object)[
 215              'name' => 'Test web service',
 216              'enabled' => 1,
 217              'requiredcapability' => '',
 218              'restrictedusers' => false,
 219              'component' => 'moodle',
 220              'downloadfiles' => false,
 221              'uploadfiles' => false,
 222          ]);
 223  
 224          // Add a function to the service that does not declare any capability as required.
 225          $wsman->add_external_function_to_service('core_webservice_get_site_info', $serviceid);
 226  
 227          // Users can be provided as an array of objects, arrays or integers (ids).
 228          $this->assertEmpty($wsman->get_missing_capabilities_by_users([$user1, array($user2), $user3->id], $serviceid));
 229  
 230          // Add a function to the service that declares some capability as required, but that capability is common for
 231          // any user. Here we use 'core_message_delete_conversation' which declares 'moodle/site:deleteownmessage' which
 232          // in turn is granted to the authenticated user archetype by default.
 233          $wsman->add_external_function_to_service('core_message_delete_conversation', $serviceid);
 234  
 235          // So all three users should have this capability implicitly.
 236          $this->assertEmpty($wsman->get_missing_capabilities_by_users([$user1, $user2, $user3], $serviceid));
 237  
 238          // Add a function to the service that declares some non-common capability. Here we use
 239          // 'core_group_add_group_members' that wants 'moodle/course:managegroups'.
 240          $wsman->add_external_function_to_service('core_group_add_group_members', $serviceid);
 241  
 242          // Make it so that the $user1 has the capability in some course.
 243          $course1 = $this->getDataGenerator()->create_course();
 244          $this->getDataGenerator()->enrol_user($user1->id, $course1->id, 'editingteacher');
 245  
 246          // Check that no missing capability is reported for the $user1. We don't care at what actual context the
 247          // external function call will evaluate the permission. We just check that there is a chance that the user has
 248          // the capability somewhere.
 249          $this->assertEmpty($wsman->get_missing_capabilities_by_users([$user1], $serviceid));
 250  
 251          // But there is no place at the site where the capability would be granted to the other two users, so it is
 252          // reported as missing.
 253          $missing = $wsman->get_missing_capabilities_by_users([$user1, $user2, $user3], $serviceid);
 254          $this->assertArrayNotHasKey($user1->id, $missing);
 255          $this->assertContains('moodle/course:managegroups', $missing[$user2->id]);
 256          $this->assertContains('moodle/course:managegroups', $missing[$user3->id]);
 257      }
 258  
 259      /**
 260       * Data provider for {@see test_get_active_tokens}
 261       *
 262       * @return array
 263       */
 264      public function get_active_tokens_provider(): array {
 265          return [
 266              'No expiration' => [0, true],
 267              'Active' => [time() + DAYSECS, true],
 268              'Expired' => [time() - DAYSECS, false],
 269          ];
 270      }
 271  
 272      /**
 273       * Test getting active tokens for a user
 274       *
 275       * @param int $validuntil
 276       * @param bool $expectedactive
 277       *
 278       * @dataProvider get_active_tokens_provider
 279       */
 280      public function test_get_active_tokens(int $validuntil, bool $expectedactive): void {
 281          $this->resetAfterTest();
 282  
 283          $user = $this->getDataGenerator()->create_user();
 284  
 285          /** @var core_webservice_generator $generator */
 286          $generator = $this->getDataGenerator()->get_plugin_generator('core_webservice');
 287  
 288          $service = $generator->create_service(['name' => 'My test service', 'shortname' => 'mytestservice']);
 289          $generator->create_token(['userid' => $user->id, 'service' => $service->shortname, 'validuntil' => $validuntil]);
 290  
 291          $tokens = webservice::get_active_tokens($user->id);
 292          if ($expectedactive) {
 293              $this->assertCount(1, $tokens);
 294              $this->assertEquals($service->id, reset($tokens)->externalserviceid);
 295          } else {
 296              $this->assertEmpty($tokens);
 297          }
 298      }
 299  
 300      /**
 301       * Utility method that tests the parameter type of a method info's input/output parameter.
 302       *
 303       * @param string $type The parameter type that is being evaluated.
 304       * @param mixed $methoddesc The method description of the WS function.
 305       * @param array $servicestructs The list of generated service struct classes.
 306       */
 307      private function check_params($type, $methoddesc, $servicestructs) {
 308          if ($methoddesc instanceof external_value) {
 309              // Test for simple types.
 310              if (in_array($methoddesc->type, [PARAM_INT, PARAM_FLOAT, PARAM_BOOL])) {
 311                  $this->assertEquals($methoddesc->type, $type);
 312              } else {
 313                  $this->assertEquals('string', $type);
 314              }
 315          } else if ($methoddesc instanceof external_single_structure) {
 316              // Test that the class name of the struct class is in the array of service structs.
 317              $structinfo = $this->get_struct_info($servicestructs, $type);
 318              $this->assertNotNull($structinfo);
 319              // Test that the properties of the struct info exist in the method description.
 320              foreach ($structinfo->properties as $propname => $proptype) {
 321                  $this->assertTrue($this->in_keydesc($methoddesc, $propname));
 322              }
 323          } else if ($methoddesc instanceof external_multiple_structure) {
 324              // Test for array types.
 325              $this->assertEquals('array', $type);
 326          }
 327      }
 328  
 329      /**
 330       * Gets the struct information from the list of struct classes based on the given struct class name.
 331       *
 332       * @param array $structarray The list of generated struct classes.
 333       * @param string $structclass The name of the struct class.
 334       * @return object|null The struct class info, or null if it's not found.
 335       */
 336      private function get_struct_info($structarray, $structclass) {
 337          foreach ($structarray as $struct) {
 338              if ($struct->classname === $structclass) {
 339                  return $struct;
 340              }
 341          }
 342          return null;
 343      }
 344  
 345      /**
 346       * Searches the keys of the given external_single_structure object if it contains a certain property name.
 347       *
 348       * @param external_single_structure $keydesc
 349       * @param string $propertyname The property name to be searched for.
 350       * @return bool True if the property name is found in $keydesc. False, otherwise.
 351       */
 352      private function in_keydesc(external_single_structure $keydesc, $propertyname) {
 353          foreach ($keydesc->keys as $key => $desc) {
 354              if ($key === $propertyname) {
 355                  return true;
 356              }
 357          }
 358          return false;
 359      }
 360  }
 361  
 362  /**
 363   * Class webservice_dummy.
 364   *
 365   * Dummy webservice class for testing the \webservice_base_server class and enable us to expose variables we want to test.
 366   *
 367   * @package    core_webservice
 368   * @category   test
 369   * @copyright  2016 Jun Pataleta <jun@moodle.com>
 370   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 371   */
 372  class webservice_dummy extends \webservice_base_server {
 373  
 374      /**
 375       * webservice_dummy constructor.
 376       *
 377       * @param int $authmethod The authentication method.
 378       */
 379      public function __construct($authmethod) {
 380          parent::__construct($authmethod);
 381  
 382          // Arbitrarily naming this as REST in order not to have to register another WS protocol and set capabilities.
 383          $this->wsname = 'rest';
 384      }
 385  
 386      /**
 387       * Token setter method.
 388       *
 389       * @param string $token The web service token.
 390       */
 391      public function set_token($token) {
 392          $this->token = $token;
 393      }
 394  
 395      /**
 396       * This method parses the request input, it needs to get:
 397       *  1/ user authentication - username+password or token
 398       *  2/ function name
 399       *  3/ function parameters
 400       */
 401      protected function parse_request() {
 402          // Just a method stub. No need to implement at the moment since it's not really being used for this test case for now.
 403      }
 404  
 405      /**
 406       * Send the result of function call to the WS client.
 407       */
 408      protected function send_response() {
 409          // Just a method stub. No need to implement at the moment since it's not really being used for this test case for now.
 410      }
 411  
 412      /**
 413       * Send the error information to the WS client.
 414       *
 415       * @param exception $ex
 416       */
 417      protected function send_error($ex = null) {
 418          // Just a method stub. No need to implement at the moment since it's not really being used for this test case for now.
 419      }
 420  
 421      /**
 422       * run() method implementation.
 423       */
 424      public function run() {
 425          $this->authenticate_user();
 426          $this->init_service_class();
 427      }
 428  
 429      /**
 430       * Getter method of servicemethods array.
 431       *
 432       * @return array
 433       */
 434      public function get_service_methods() {
 435          return $this->servicemethods;
 436      }
 437  
 438      /**
 439       * Getter method of servicestructs array.
 440       *
 441       * @return array
 442       */
 443      public function get_service_structs() {
 444          return $this->servicestructs;
 445      }
 446  }