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See Release Notes

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.

Differences Between: [Versions 310 and 311] [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 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   * Web service documentation renderer.
  20   *
  21   * @package    core_webservice
  22   * @category   output
  23   * @copyright  2009 Jerome Mouneyrac <jerome@moodle.com>
  24   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25   */
  26  class core_webservice_renderer extends plugin_renderer_base {
  27  
  28      /**
  29       * Display the authorised user selector
  30       *
  31       * @param stdClass $options It contains alloweduserselector, potentialuserselector and serviceid
  32       * @return string html
  33       */
  34      public function admin_authorised_user_selector(&$options) {
  35          global $CFG;
  36          $formcontent = html_writer::empty_tag('input',
  37                          array('name' => 'sesskey', 'value' => sesskey(), 'type' => 'hidden'));
  38  
  39          $table = new html_table();
  40          $table->size = array('45%', '10%', '45%');
  41          $table->attributes['class'] = 'roleassigntable generaltable generalbox boxaligncenter';
  42          $table->summary = '';
  43          $table->cellspacing = 0;
  44          $table->cellpadding = 0;
  45  
  46          // LTR/RTL support, for drawing button arrows in the right direction
  47          if (right_to_left()) {
  48              $addarrow = '▶';
  49              $removearrow = '◀';
  50          } else {
  51              $addarrow = '◀';
  52              $removearrow = '▶';
  53          }
  54  
  55          //create the add and remove button
  56          $addinput = html_writer::empty_tag('input',
  57                          array('name' => 'add', 'id' => 'add', 'type' => 'submit',
  58                              'value' => $addarrow . ' ' . get_string('add'),
  59                              'title' => get_string('add')));
  60          $addbutton = html_writer::tag('div', $addinput, array('id' => 'addcontrols'));
  61          $removeinput = html_writer::empty_tag('input',
  62                          array('name' => 'remove', 'id' => 'remove', 'type' => 'submit',
  63                              'value' => $removearrow . ' ' . get_string('remove'),
  64                              'title' => get_string('remove')));
  65          $removebutton = html_writer::tag('div', $removeinput, array('id' => 'removecontrols'));
  66  
  67  
  68          //create the three cells
  69          $label = html_writer::tag('label', get_string('serviceusers', 'webservice'),
  70                          array('for' => 'removeselect'));
  71          $label = html_writer::tag('p', $label);
  72          $authoriseduserscell = new html_table_cell($label .
  73                          $options->alloweduserselector->display(true));
  74          $authoriseduserscell->id = 'existingcell';
  75          $buttonscell = new html_table_cell($addbutton . html_writer::empty_tag('br') . $removebutton);
  76          $buttonscell->id = 'buttonscell';
  77          $label = html_writer::tag('label', get_string('potusers', 'webservice'),
  78                          array('for' => 'addselect'));
  79          $label = html_writer::tag('p', $label);
  80          $otheruserscell = new html_table_cell($label .
  81                          $options->potentialuserselector->display(true));
  82          $otheruserscell->id = 'potentialcell';
  83  
  84          $cells = array($authoriseduserscell, $buttonscell, $otheruserscell);
  85          $row = new html_table_row($cells);
  86          $table->data[] = $row;
  87          $formcontent .= html_writer::table($table);
  88  
  89          $formcontent = html_writer::tag('div', $formcontent);
  90  
  91          $actionurl = new moodle_url('/' . $CFG->admin . '/webservice/service_users.php',
  92                          array('id' => $options->serviceid));
  93          $html = html_writer::tag('form', $formcontent,
  94                          array('id' => 'assignform', 'action' => $actionurl, 'method' => 'post'));
  95          return $html;
  96      }
  97  
  98      /**
  99       * Display list of authorised users
 100       *
 101       * @param array $users authorised users
 102       * @param int $serviceid service id
 103       * @return string $html
 104       */
 105      public function admin_authorised_user_list($users, $serviceid) {
 106          global $CFG;
 107          $html = $this->output->box_start('generalbox', 'alloweduserlist');
 108          foreach ($users as $user) {
 109              $modifiedauthoriseduserurl = new moodle_url('/' . $CFG->admin . '/webservice/service_user_settings.php',
 110                              array('userid' => $user->id, 'serviceid' => $serviceid));
 111              $html .= html_writer::tag('a', $user->firstname . " "
 112                              . $user->lastname . ", " . s($user->email),
 113                              array('href' => $modifiedauthoriseduserurl));
 114              //add missing capabilities
 115              if (!empty($user->missingcapabilities)) {
 116                  $html .= html_writer::tag('div',
 117                                  get_string('usermissingcaps', 'webservice', $user->missingcapabilities)
 118                                  . '&nbsp;' . $this->output->help_icon('missingcaps', 'webservice'),
 119                                  array('class' => 'missingcaps', 'id' => 'usermissingcaps'));
 120                  $html .= html_writer::empty_tag('br');
 121              } else {
 122                  $html .= html_writer::empty_tag('br') . html_writer::empty_tag('br');
 123              }
 124          }
 125          $html .= $this->output->box_end();
 126          return $html;
 127      }
 128  
 129      /**
 130       * Display a confirmation page to remove a function from a service
 131       *
 132       * @param stdClass $function It needs function id + function name properties.
 133       * @param stdClass $service It needs service id + service name properties.
 134       * @return string html
 135       */
 136      public function admin_remove_service_function_confirmation($function, $service) {
 137          $optionsyes = array('id' => $service->id, 'action' => 'delete',
 138              'confirm' => 1, 'sesskey' => sesskey(), 'fid' => $function->id);
 139          $optionsno = array('id' => $service->id);
 140          $formcontinue = new single_button(new moodle_url('service_functions.php',
 141                                  $optionsyes), get_string('remove'));
 142          $formcancel = new single_button(new moodle_url('service_functions.php',
 143                                  $optionsno), get_string('cancel'), 'get');
 144          return $this->output->confirm(get_string('removefunctionconfirm', 'webservice',
 145                          (object) array('service' => $service->name, 'function' => $function->name)),
 146                  $formcontinue, $formcancel);
 147      }
 148  
 149      /**
 150       * Display a confirmation page to remove a service
 151       *
 152       * @param stdClass $service It needs service id + service name properties.
 153       * @return string html
 154       */
 155      public function admin_remove_service_confirmation($service) {
 156          global $CFG;
 157          $optionsyes = array('id' => $service->id, 'action' => 'delete',
 158              'confirm' => 1, 'sesskey' => sesskey());
 159          $optionsno = array('section' => 'externalservices');
 160          $formcontinue = new single_button(new moodle_url('service.php', $optionsyes),
 161                          get_string('delete'), 'post');
 162          $formcancel = new single_button(
 163                          new moodle_url($CFG->wwwroot . "/" . $CFG->admin . "/settings.php", $optionsno),
 164                          get_string('cancel'), 'get');
 165          return $this->output->confirm(get_string('deleteserviceconfirm', 'webservice', $service->name),
 166                  $formcontinue, $formcancel);
 167      }
 168  
 169      /**
 170       * Display a confirmation page to delete a token
 171       *
 172       * @param stdClass $token Required properties: id (token id), firstname (user firstname), lastname (user lastname), name (service name)
 173       * @return string html
 174       */
 175      public function admin_delete_token_confirmation($token) {
 176          global $CFG;
 177          $optionsyes = array('tokenid' => $token->id, 'action' => 'delete',
 178              'confirm' => 1, 'sesskey' => sesskey());
 179          $optionsno = array('section' => 'webservicetokens', 'sesskey' => sesskey());
 180          $formcontinue = new single_button(
 181                          new moodle_url('/' . $CFG->admin . '/webservice/tokens.php', $optionsyes),
 182                          get_string('delete'));
 183          $formcancel = new single_button(
 184                          new moodle_url('/' . $CFG->admin . '/settings.php', $optionsno),
 185                          get_string('cancel'), 'get');
 186          return $this->output->confirm(get_string('deletetokenconfirm', 'webservice',
 187                          (object) array('user' => $token->firstname . " "
 188                              . $token->lastname, 'service' => $token->name)),
 189                  $formcontinue, $formcancel);
 190      }
 191  
 192      /**
 193       * Display a list of functions for a given service
 194       * If the service is built-in, do not display remove/add operation (read-only)
 195       *
 196       * @param array $functions list of functions
 197       * @param stdClass $service the given service
 198       * @return string the table html + add operation html
 199       */
 200      public function admin_service_function_list($functions, $service) {
 201          global $CFG;
 202          if (!empty($functions)) {
 203              $table = new html_table();
 204              $table->head = array(get_string('function', 'webservice'),
 205                  get_string('description'), get_string('requiredcaps', 'webservice'));
 206              $table->align = array('left', 'left', 'left');
 207              $table->size = array('15%', '40%', '40%');
 208              $table->width = '100%';
 209              $table->align[] = 'left';
 210  
 211              //display remove function operation (except for build-in service)
 212              if (empty($service->component)) {
 213                  $table->head[] = get_string('edit');
 214                  $table->align[] = 'center';
 215              }
 216  
 217              $anydeprecated = false;
 218              foreach ($functions as $function) {
 219                  $function = external_api::external_function_info($function);
 220  
 221                  if (!empty($function->deprecated)) {
 222                      $anydeprecated = true;
 223                  }
 224                  $requiredcaps = html_writer::tag('div',
 225                                  empty($function->capabilities) ? '' : $function->capabilities,
 226                                  array('class' => 'functiondesc'));
 227                  ;
 228                  $description = html_writer::tag('div', $function->description,
 229                                  array('class' => 'functiondesc'));
 230                  //display remove function operation (except for build-in service)
 231                  if (empty($service->component)) {
 232                      $removeurl = new moodle_url('/' . $CFG->admin . '/webservice/service_functions.php',
 233                                      array('sesskey' => sesskey(), 'fid' => $function->id,
 234                                          'id' => $service->id,
 235                                          'action' => 'delete'));
 236                      $removelink = html_writer::tag('a',
 237                                      get_string('removefunction', 'webservice'),
 238                                      array('href' => $removeurl));
 239                      $table->data[] = array($function->name, $description, $requiredcaps, $removelink);
 240                  } else {
 241                      $table->data[] = array($function->name, $description, $requiredcaps);
 242                  }
 243              }
 244  
 245              $html = html_writer::table($table);
 246          } else {
 247              $html = get_string('nofunctions', 'webservice') . html_writer::empty_tag('br');
 248          }
 249  
 250          //display add function operation (except for build-in service)
 251          if (empty($service->component)) {
 252  
 253              if (!empty($anydeprecated)) {
 254                  debugging('This service uses deprecated functions, replace them by the proposed ones and update your client/s.', DEBUG_DEVELOPER);
 255              }
 256              $addurl = new moodle_url('/' . $CFG->admin . '/webservice/service_functions.php',
 257                              array('sesskey' => sesskey(), 'id' => $service->id, 'action' => 'add'));
 258              $html .= html_writer::tag('a', get_string('addfunctions', 'webservice'), array('href' => $addurl));
 259          }
 260  
 261          return $html;
 262      }
 263  
 264      /**
 265       * Display Reset token confirmation box
 266       *
 267       * @param stdClass $token token to reset
 268       * @return string html
 269       */
 270      public function user_reset_token_confirmation($token) {
 271          global $CFG;
 272          $managetokenurl = $CFG->wwwroot . "/user/managetoken.php?sesskey=" . sesskey();
 273          $optionsyes = array('tokenid' => $token->id, 'action' => 'resetwstoken', 'confirm' => 1,
 274              'sesskey' => sesskey());
 275          $optionsno = array('section' => 'webservicetokens', 'sesskey' => sesskey());
 276          $formcontinue = new single_button(new moodle_url($managetokenurl, $optionsyes),
 277                          get_string('reset'));
 278          $formcancel = new single_button(new moodle_url($managetokenurl, $optionsno),
 279                          get_string('cancel'), 'get');
 280          $html = $this->output->confirm(get_string('resettokenconfirm', 'webservice',
 281                                  (object) array('user' => $token->firstname . " " .
 282                                      $token->lastname, 'service' => $token->name)),
 283                          $formcontinue, $formcancel);
 284          return $html;
 285      }
 286  
 287      /**
 288       * Display user tokens with buttons to reset them
 289       *
 290       * @param stdClass $tokens user tokens
 291       * @param int $userid user id
 292       * @param bool $documentation if true display a link to the API documentation
 293       * @return string html code
 294       */
 295      public function user_webservice_tokens_box($tokens, $userid, $documentation = false) {
 296          global $CFG, $DB;
 297  
 298          // display strings
 299          $stroperation = get_string('operation', 'webservice');
 300          $strtoken = get_string('key', 'webservice');
 301          $strservice = get_string('service', 'webservice');
 302          $strcreator = get_string('tokencreator', 'webservice');
 303          $strcontext = get_string('context', 'webservice');
 304          $strvaliduntil = get_string('validuntil', 'webservice');
 305  
 306          $return = $this->output->heading(get_string('securitykeys', 'webservice'), 3, 'main', true);
 307          $return .= $this->output->box_start('generalbox webservicestokenui');
 308  
 309          $return .= get_string('keyshelp', 'webservice');
 310  
 311          $table = new html_table();
 312          $table->head = array($strtoken, $strservice, $strvaliduntil, $strcreator, $stroperation);
 313          $table->align = array('left', 'left', 'left', 'center', 'left', 'center');
 314          $table->width = '100%';
 315          $table->data = array();
 316  
 317          if ($documentation) {
 318              $table->head[] = get_string('doc', 'webservice');
 319              $table->align[] = 'center';
 320          }
 321  
 322          if (!empty($tokens)) {
 323              foreach ($tokens as $token) {
 324  
 325                  if ($token->creatorid == $userid) {
 326                      $reset = "<a href=\"" . $CFG->wwwroot . "/user/managetoken.php?sesskey="
 327                              . sesskey() . "&amp;action=resetwstoken&amp;tokenid=" . $token->id . "\">";
 328                      $reset .= get_string('reset') . "</a>";
 329                      $creator = $token->firstname . " " . $token->lastname;
 330                  } else {
 331                      //retrieve administrator name
 332                      $admincreator = $DB->get_record('user', array('id'=>$token->creatorid));
 333                      $creator = $admincreator->firstname . " " . $admincreator->lastname;
 334                      $reset = '';
 335                  }
 336  
 337                  $userprofilurl = new moodle_url('/user/view.php?id=' . $token->creatorid);
 338                  $creatoratag = html_writer::start_tag('a', array('href' => $userprofilurl));
 339                  $creatoratag .= $creator;
 340                  $creatoratag .= html_writer::end_tag('a');
 341  
 342                  $validuntil = '';
 343                  if (!empty($token->validuntil)) {
 344                      $validuntil = userdate($token->validuntil, get_string('strftimedatetime', 'langconfig'));
 345                  }
 346  
 347                  $tokenname = $token->name;
 348                  if (!$token->enabled) { //that is the (1 token-1ws) related ws is not enabled.
 349                      $tokenname = '<span class="dimmed_text">'.$token->name.'</span>';
 350                  }
 351                  $row = array($token->token, $tokenname, $validuntil, $creatoratag, $reset);
 352  
 353                  if ($documentation) {
 354                      $doclink = new moodle_url('/webservice/wsdoc.php',
 355                              array('id' => $token->id, 'sesskey' => sesskey()));
 356                      $row[] = html_writer::tag('a', get_string('doc', 'webservice'),
 357                              array('href' => $doclink));
 358                  }
 359  
 360                  $table->data[] = $row;
 361              }
 362              $return .= html_writer::table($table);
 363          } else {
 364              $return .= get_string('notoken', 'webservice');
 365          }
 366  
 367          $return .= $this->output->box_end();
 368          return $return;
 369      }
 370  
 371      /**
 372       * Return documentation for a ws description object
 373       * ws description object can be 'external_multiple_structure', 'external_single_structure'
 374       * or 'external_value'
 375       *
 376       * Example of documentation for core_group_create_groups function:
 377       * list of (
 378       *     object {
 379       *         courseid int //id of course
 380       *         name string //multilang compatible name, course unique
 381       *         description string //group description text
 382       *         enrolmentkey string //group enrol secret phrase
 383       *     }
 384       * )
 385       *
 386       * @param stdClass $params a part of parameter/return description
 387       * @return string the html to display
 388       */
 389      public function detailed_description_html($params) {
 390          // retrieve the description of the description object
 391          $paramdesc = "";
 392          if (!empty($params->desc)) {
 393              $paramdesc .= html_writer::start_tag('span', array('style' => "color:#2A33A6"));
 394              if ($params->required == VALUE_REQUIRED) {
 395                  $required = '';
 396              }
 397              if ($params->required == VALUE_DEFAULT) {
 398                  if ($params->default === null) {
 399                      $params->default = "null";
 400                  }
 401                  $required = html_writer::start_tag('b', array()) .
 402                          get_string('default', 'webservice', print_r($params->default, true))
 403                          . html_writer::end_tag('b');
 404              }
 405              if ($params->required == VALUE_OPTIONAL) {
 406                  $required = html_writer::start_tag('b', array()) .
 407                          get_string('optional', 'webservice') . html_writer::end_tag('b');
 408              }
 409              $paramdesc .= " " . $required . " ";
 410              $paramdesc .= html_writer::start_tag('i', array());
 411              $paramdesc .= "//";
 412  
 413              $paramdesc .= s($params->desc);
 414  
 415              $paramdesc .= html_writer::end_tag('i');
 416  
 417              $paramdesc .= html_writer::end_tag('span');
 418              $paramdesc .= html_writer::empty_tag('br', array());
 419          }
 420  
 421          // description object is a list
 422          if ($params instanceof external_multiple_structure) {
 423              return $paramdesc . "list of ( " . html_writer::empty_tag('br', array())
 424              . $this->detailed_description_html($params->content) . ")";
 425          } else if ($params instanceof external_single_structure) {
 426              // description object is an object
 427              $singlestructuredesc = $paramdesc . "object {" . html_writer::empty_tag('br', array());
 428              foreach ($params->keys as $attributname => $attribut) {
 429                  $singlestructuredesc .= html_writer::start_tag('b', array());
 430                  $singlestructuredesc .= $attributname;
 431                  $singlestructuredesc .= html_writer::end_tag('b');
 432                  $singlestructuredesc .= " " .
 433                          $this->detailed_description_html($params->keys[$attributname]);
 434              }
 435              $singlestructuredesc .= "} ";
 436              $singlestructuredesc .= html_writer::empty_tag('br', array());
 437              return $singlestructuredesc;
 438          } else {
 439              // description object is a primary type (string, integer)
 440              switch ($params->type) {
 441                  case PARAM_BOOL: // 0 or 1 only for now
 442                  case PARAM_INT:
 443                      $type = 'int';
 444                      break;
 445                  case PARAM_FLOAT;
 446                      $type = 'double';
 447                      break;
 448                  default:
 449                      $type = 'string';
 450              }
 451              return $type . " " . $paramdesc;
 452          }
 453      }
 454  
 455      /**
 456       * Return a description object in indented xml format (for REST response)
 457       * It is indented to be output within <pre> tags
 458       *
 459       * @param external_description $returndescription the description structure of the web service function returned value
 460       * @param string $indentation Indentation in the generated HTML code; should contain only spaces.
 461       * @return string the html to diplay
 462       */
 463      public function description_in_indented_xml_format($returndescription, $indentation = "") {
 464          $indentation = $indentation . "    ";
 465          $brakeline = <<<EOF
 466  
 467  
 468  EOF;
 469          // description object is a list
 470          if ($returndescription instanceof external_multiple_structure) {
 471              $return = $indentation . "<MULTIPLE>" . $brakeline;
 472              $return .= $this->description_in_indented_xml_format($returndescription->content,
 473                              $indentation);
 474              $return .= $indentation . "</MULTIPLE>" . $brakeline;
 475              return $return;
 476          } else if ($returndescription instanceof external_single_structure) {
 477              // description object is an object
 478              $singlestructuredesc = $indentation . "<SINGLE>" . $brakeline;
 479              $keyindentation = $indentation . "    ";
 480              foreach ($returndescription->keys as $attributname => $attribut) {
 481                  $singlestructuredesc .= $keyindentation . "<KEY name=\"" . $attributname . "\">"
 482                          . $brakeline .
 483                          $this->description_in_indented_xml_format(
 484                                  $returndescription->keys[$attributname], $keyindentation) .
 485                          $keyindentation . "</KEY>" . $brakeline;
 486              }
 487              $singlestructuredesc .= $indentation . "</SINGLE>" . $brakeline;
 488              return $singlestructuredesc;
 489          } else {
 490              // description object is a primary type (string, integer)
 491              switch ($returndescription->type) {
 492                  case PARAM_BOOL: // 0 or 1 only for now
 493                  case PARAM_INT:
 494                      $type = 'int';
 495                      break;
 496                  case PARAM_FLOAT;
 497                      $type = 'double';
 498                      break;
 499                  default:
 500                      $type = 'string';
 501              }
 502              return $indentation . "<VALUE>" . $type . "</VALUE>" . $brakeline;
 503          }
 504      }
 505  
 506      /**
 507       * Create indented XML-RPC  param description
 508       *
 509       * @param external_description $paramdescription the description structure of the web service function parameters
 510       * @param string $indentation Indentation in the generated HTML code; should contain only spaces.
 511       * @return string the html to diplay
 512       */
 513      public function xmlrpc_param_description_html($paramdescription, $indentation = "") {
 514          $indentation = $indentation . "    ";
 515          $brakeline = <<<EOF
 516  
 517  
 518  EOF;
 519          // description object is a list
 520          if ($paramdescription instanceof external_multiple_structure) {
 521              $return = $brakeline . $indentation . "Array ";
 522              $indentation = $indentation . "    ";
 523              $return .= $brakeline . $indentation . "(";
 524              $return .= $brakeline . $indentation . "[0] =>";
 525              $return .= $this->xmlrpc_param_description_html($paramdescription->content, $indentation);
 526              $return .= $brakeline . $indentation . ")";
 527              return $return;
 528          } else if ($paramdescription instanceof external_single_structure) {
 529              // description object is an object
 530              $singlestructuredesc = $brakeline . $indentation . "Array ";
 531              $keyindentation = $indentation . "    ";
 532              $singlestructuredesc .= $brakeline . $keyindentation . "(";
 533              foreach ($paramdescription->keys as $attributname => $attribut) {
 534                  $singlestructuredesc .= $brakeline . $keyindentation . "[" . $attributname . "] =>" .
 535                          $this->xmlrpc_param_description_html(
 536                                  $paramdescription->keys[$attributname], $keyindentation) .
 537                          $keyindentation;
 538              }
 539              $singlestructuredesc .= $brakeline . $keyindentation . ")";
 540              return $singlestructuredesc;
 541          } else {
 542              // description object is a primary type (string, integer)
 543              switch ($paramdescription->type) {
 544                  case PARAM_BOOL: // 0 or 1 only for now
 545                  case PARAM_INT:
 546                      $type = 'int';
 547                      break;
 548                  case PARAM_FLOAT;
 549                      $type = 'double';
 550                      break;
 551                  default:
 552                      $type = 'string';
 553              }
 554              return " " . $type;
 555          }
 556      }
 557  
 558      /**
 559       * Return the html of a coloured box with content
 560       *
 561       * @param string $title - the title of the box
 562       * @param string $content - the content to displayed
 563       * @param string $rgb - the background color of the box
 564       * @return string HTML code
 565       */
 566      public function colored_box_with_pre_tag($title, $content, $rgb = 'FEEBE5') {
 567          //TODO MDL-31192 this tag removes xhtml strict error but cause warning
 568          $coloredbox = html_writer::start_tag('div', array());
 569          $coloredbox .= html_writer::start_tag('div',
 570                          array('style' => "border:solid 1px #DEDEDE;background:#" . $rgb
 571                              . ";color:#222222;padding:4px;"));
 572          $coloredbox .= html_writer::start_tag('pre', array());
 573          $coloredbox .= html_writer::start_tag('b', array());
 574          $coloredbox .= $title;
 575          $coloredbox .= html_writer::end_tag('b', array());
 576          $coloredbox .= html_writer::empty_tag('br', array());
 577          $coloredbox .= "\n" . $content . "\n";
 578          $coloredbox .= html_writer::end_tag('pre', array());
 579          $coloredbox .= html_writer::end_tag('div', array());
 580          $coloredbox .= html_writer::end_tag('div', array());
 581          return $coloredbox;
 582      }
 583  
 584      /**
 585       * Return indented REST param description
 586       *
 587       * @param external_description $paramdescription the description structure of the web service function parameters
 588       * @param string $paramstring parameter
 589       * @return string the html to diplay
 590       */
 591      public function rest_param_description_html($paramdescription, $paramstring) {
 592          $brakeline = <<<EOF
 593  
 594  
 595  EOF;
 596          // description object is a list
 597          if ($paramdescription instanceof external_multiple_structure) {
 598              $paramstring = $paramstring . '[0]';
 599              $return = $this->rest_param_description_html($paramdescription->content, $paramstring);
 600              return $return;
 601          } else if ($paramdescription instanceof external_single_structure) {
 602              // description object is an object
 603              $singlestructuredesc = "";
 604              $initialparamstring = $paramstring;
 605              foreach ($paramdescription->keys as $attributname => $attribut) {
 606                  $paramstring = $initialparamstring . '[' . $attributname . ']';
 607                  $singlestructuredesc .= $this->rest_param_description_html(
 608                                  $paramdescription->keys[$attributname], $paramstring);
 609              }
 610              return $singlestructuredesc;
 611          } else {
 612              // description object is a primary type (string, integer)
 613              $paramstring = $paramstring . '=';
 614              switch ($paramdescription->type) {
 615                  case PARAM_BOOL: // 0 or 1 only for now
 616                  case PARAM_INT:
 617                      $type = 'int';
 618                      break;
 619                  case PARAM_FLOAT;
 620                      $type = 'double';
 621                      break;
 622                  default:
 623                      $type = 'string';
 624              }
 625              return $paramstring . " " . $type . $brakeline;
 626          }
 627      }
 628  
 629      /**
 630       * Displays all the documentation
 631       *
 632       * @param array $functions external_description of all the web service functions
 633       * @param boolean $printableformat true if we want to display the documentation in a printable format
 634       * @param array $activatedprotocol the currently enabled protocol
 635       * @param array $authparams url parameters (it contains 'tokenid' and sometimes 'print')
 636       * @param string $parenturl url of the calling page - needed for the print button url:
 637       *               '/admin/documentation.php' or '/webservice/wsdoc.php' (default)
 638       * @return string the html to diplay
 639       */
 640      public function documentation_html($functions, $printableformat, $activatedprotocol,
 641              $authparams, $parenturl = '/webservice/wsdoc.php') {
 642  
 643          $documentationhtml = $this->output->heading(get_string('wsdocapi', 'webservice'));
 644  
 645          $br = html_writer::empty_tag('br', array());
 646          $brakeline = <<<EOF
 647  
 648  
 649  EOF;
 650          // Some general information
 651          $docinfo = new stdClass();
 652          $docurl = new moodle_url('http://docs.moodle.org/dev/Creating_a_web_service_client');
 653          $docinfo->doclink = html_writer::tag('a',
 654                          get_string('wsclientdoc', 'webservice'), array('href' => $docurl));
 655          $documentationhtml .= get_string('wsdocumentationintro', 'webservice', $docinfo);
 656          $documentationhtml .= $br . $br;
 657  
 658  
 659          // Print button
 660          $authparams['print'] = true;
 661          $url = new moodle_url($parenturl, $authparams); // Required
 662          $documentationhtml .= $this->output->single_button($url, get_string('print', 'webservice'));
 663          $documentationhtml .= $br;
 664  
 665  
 666          // each functions will be displayed into a collapsible region
 667          //(opened if printableformat = true)
 668          foreach ($functions as $functionname => $description) {
 669  
 670              if (empty($printableformat)) {
 671                  $documentationhtml .= print_collapsible_region_start('',
 672                                  'aera_' . $functionname,
 673                                  html_writer::start_tag('strong', array())
 674                                  . $functionname . html_writer::end_tag('strong'),
 675                                  false,
 676                                  !$printableformat,
 677                                  true);
 678              } else {
 679                  $documentationhtml .= html_writer::tag('strong', $functionname);
 680                  $documentationhtml .= $br;
 681              }
 682  
 683              // function global description
 684              $documentationhtml .= $br;
 685              $documentationhtml .= html_writer::start_tag('div',
 686                              array('style' => 'border:solid 1px #DEDEDE;background:#E2E0E0;
 687                          color:#222222;padding:4px;'));
 688              $documentationhtml .= s($description->description);
 689              $documentationhtml .= html_writer::end_tag('div');
 690              $documentationhtml .= $br . $br;
 691  
 692              // function arguments documentation
 693              $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
 694              $documentationhtml .= get_string('arguments', 'webservice');
 695              $documentationhtml .= html_writer::end_tag('span');
 696              $documentationhtml .= $br;
 697              foreach ($description->parameters_desc->keys as $paramname => $paramdesc) {
 698                  // a argument documentation
 699                  $documentationhtml .= html_writer::start_tag('span', array('style' => 'font-size:80%'));
 700  
 701                  if ($paramdesc->required == VALUE_REQUIRED) {
 702                      $required = get_string('required', 'webservice');
 703                  }
 704                  if ($paramdesc->required == VALUE_DEFAULT) {
 705                      if ($paramdesc->default === null) {
 706                          $default = "null";
 707                      } else {
 708                          $default = print_r($paramdesc->default, true);
 709                      }
 710                      $required = get_string('default', 'webservice', $default);
 711                  }
 712                  if ($paramdesc->required == VALUE_OPTIONAL) {
 713                      $required = get_string('optional', 'webservice');
 714                  }
 715  
 716                  $documentationhtml .= html_writer::start_tag('b', array());
 717                  $documentationhtml .= $paramname;
 718                  $documentationhtml .= html_writer::end_tag('b');
 719                  $documentationhtml .= " (" . $required . ")"; // argument is required or optional ?
 720                  $documentationhtml .= $br;
 721                  $documentationhtml .= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"
 722                          . s($paramdesc->desc); // Argument description.
 723                  $documentationhtml .= $br . $br;
 724                  // general structure of the argument
 725                  $documentationhtml .= $this->colored_box_with_pre_tag(
 726                                  get_string('generalstructure', 'webservice'),
 727                                  $this->detailed_description_html($paramdesc),
 728                                  'FFF1BC');
 729                  // xml-rpc structure of the argument in PHP format
 730                  if (!empty($activatedprotocol['xmlrpc'])) {
 731                      $documentationhtml .= $this->colored_box_with_pre_tag(
 732                                      get_string('phpparam', 'webservice'),
 733                                      htmlentities('[' . $paramname . '] =>'
 734                                              . $this->xmlrpc_param_description_html($paramdesc)),
 735                                      'DFEEE7');
 736                  }
 737                  // POST format for the REST protocol for the argument
 738                  if (!empty($activatedprotocol['rest'])) {
 739                      $documentationhtml .= $this->colored_box_with_pre_tag(
 740                                      get_string('restparam', 'webservice'),
 741                                      htmlentities($this->rest_param_description_html(
 742                                                      $paramdesc, $paramname)),
 743                                      'FEEBE5');
 744                  }
 745                  $documentationhtml .= html_writer::end_tag('span');
 746              }
 747              $documentationhtml .= $br . $br;
 748  
 749  
 750              // function response documentation
 751              $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
 752              $documentationhtml .= get_string('response', 'webservice');
 753              $documentationhtml .= html_writer::end_tag('span');
 754              $documentationhtml .= $br;
 755              // function response description
 756              $documentationhtml .= html_writer::start_tag('span', array('style' => 'font-size:80%'));
 757              if (!empty($description->returns_desc->desc)) {
 758                  $documentationhtml .= $description->returns_desc->desc;
 759                  $documentationhtml .= $br . $br;
 760              }
 761              if (!empty($description->returns_desc)) {
 762                  // general structure of the response
 763                  $documentationhtml .= $this->colored_box_with_pre_tag(
 764                                  get_string('generalstructure', 'webservice'),
 765                                  $this->detailed_description_html($description->returns_desc),
 766                                  'FFF1BC');
 767                  // xml-rpc structure of the response in PHP format
 768                  if (!empty($activatedprotocol['xmlrpc'])) {
 769                      $documentationhtml .= $this->colored_box_with_pre_tag(
 770                                      get_string('phpresponse', 'webservice'),
 771                                      htmlentities($this->xmlrpc_param_description_html(
 772                                                      $description->returns_desc)),
 773                                      'DFEEE7');
 774                  }
 775                  // XML response for the REST protocol
 776                  if (!empty($activatedprotocol['rest'])) {
 777                      $restresponse = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>"
 778                              . $brakeline . "<RESPONSE>" . $brakeline;
 779                      $restresponse .= $this->description_in_indented_xml_format(
 780                                      $description->returns_desc);
 781                      $restresponse .="</RESPONSE>" . $brakeline;
 782                      $documentationhtml .= $this->colored_box_with_pre_tag(
 783                                      get_string('restcode', 'webservice'),
 784                                      htmlentities($restresponse),
 785                                      'FEEBE5');
 786                  }
 787              }
 788              $documentationhtml .= html_writer::end_tag('span');
 789              $documentationhtml .= $br . $br;
 790  
 791              // function errors documentation for REST protocol
 792              if (!empty($activatedprotocol['rest'])) {
 793                  $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
 794                  $documentationhtml .= get_string('errorcodes', 'webservice');
 795                  $documentationhtml .= html_writer::end_tag('span');
 796                  $documentationhtml .= $br . $br;
 797                  $documentationhtml .= html_writer::start_tag('span', array('style' => 'font-size:80%'));
 798                  $errormessage = get_string('invalidparameter', 'debug');
 799                  $restexceptiontext = <<<EOF
 800  <?xml version="1.0" encoding="UTF-8"?>
 801  <EXCEPTION class="invalid_parameter_exception">
 802      <MESSAGE>{$errormessage}</MESSAGE>
 803      <DEBUGINFO></DEBUGINFO>
 804  </EXCEPTION>
 805  EOF;
 806                  $documentationhtml .= $this->colored_box_with_pre_tag(
 807                                  get_string('restexception', 'webservice'),
 808                                  htmlentities($restexceptiontext),
 809                                  'FEEBE5');
 810  
 811                  $documentationhtml .= html_writer::end_tag('span');
 812              }
 813              $documentationhtml .= $br . $br;
 814  
 815              // Login required info.
 816              $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
 817              $documentationhtml .= get_string('loginrequired', 'webservice') . $br;
 818              $documentationhtml .= html_writer::end_tag('span');
 819              $documentationhtml .= $description->loginrequired ? get_string('yes') : get_string('no');
 820              $documentationhtml .= $br . $br;
 821  
 822              // Ajax info.
 823              $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
 824              $documentationhtml .= get_string('callablefromajax', 'webservice') . $br;
 825              $documentationhtml .= html_writer::end_tag('span');
 826              $documentationhtml .= $description->allowed_from_ajax ? get_string('yes') : get_string('no');
 827              $documentationhtml .= $br . $br;
 828  
 829              if (empty($printableformat)) {
 830                  $documentationhtml .= print_collapsible_region_end(true);
 831              }
 832          }
 833  
 834          return $documentationhtml;
 835      }
 836  
 837  }