Merge branch 'release' into stable

2017-04-18 09:26:01 +02:00 · 2017-04-18 09:26:01 +02:00 · da568e4b8a
parent bfda796ab7 dcbb5a2a18
commit da568e4b8a
18 changed files with 579 additions and 135 deletions
--- a/fonts/h5p-core-16.eot
+++ b/fonts/h5p-core-16.eot
--- a/fonts/h5p-core-16.svg
+++ b/fonts/h5p-core-16.svg
@ -1,58 +0,0 @@
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--- a/fonts/h5p-core-18.ttf
+++ b/fonts/h5p-core-18.ttf
--- a/fonts/h5p-core-18.woff
+++ b/fonts/h5p-core-18.woff
--- a/h5p-default-storage.class.php
+++ b/h5p-default-storage.class.php
@ -285,7 +285,7 @@ class H5PDefaultStorage implements \H5PFileStorage {
   * @return string
   */
  public function getContent($file_path) {
-    return file_get_contents($this->path . $file_path);
+    return file_get_contents($file_path);
  }

  /**
@ -299,7 +299,7 @@ class H5PDefaultStorage implements \H5PFileStorage {
    // Prepare directory
    if (empty($contentId)) {
      // Should be in editor tmp folder
-      $path = ($this->alteditorpath !== NULL ? $this->alteditorpath : $this->path . '/editor');
+      $path = $this->getEditorPath();
    }
    else {
      // Should be in content folder
@ -319,7 +319,7 @@ class H5PDefaultStorage implements \H5PFileStorage {
      copy($_FILES['file']['tmp_name'], $path);
    }

-    return $path;
+    return $file;
  }

  /**
@ -333,7 +333,7 @@ class H5PDefaultStorage implements \H5PFileStorage {
  public function cloneContentFile($file, $fromId, $toId) {
    // Determine source path
    if ($fromId === 'editor') {
-      $sourcepath = ($this->alteditorpath !== NULL ? $this->alteditorpath : "{$this->path}/editor");
+      $sourcepath = $this->getEditorPath();
    }
    else {
      $sourcepath = "{$this->path}/content/{$fromId}";
@ -358,6 +358,49 @@ class H5PDefaultStorage implements \H5PFileStorage {
    copy($sourcepath, $targetpath);
  }

+  /**
+   * Copy a content from one directory to another. Defaults to cloning
+   * content from the current temporary upload folder to the editor path.
+   *
+   * @param string $source path to source directory
+   * @param string $contentId Id of content
+   *
+   * @return object Object containing h5p json and content json data
+   */
+  public function moveContentDirectory($source, $contentId = NULL) {
+    if ($source === NULL) {
+      return NULL;
+    }
+
+    if ($contentId === NULL || $contentId == 0) {
+      $target = $this->getEditorPath();
+    }
+    else {
+      // Use content folder
+      $target = "{$this->path}/content/{$contentId}";
+    }
+
+    $contentSource = $source . DIRECTORY_SEPARATOR . 'content';
+    $contentFiles = array_diff(scandir($contentSource), array('.','..', 'content.json'));
+    foreach ($contentFiles as $file) {
+      if (is_dir("{$contentSource}/{$file}")) {
+        self::copyFileTree("{$contentSource}/{$file}", "{$target}/{$file}");
+      }
+      else {
+        copy("{$contentSource}/{$file}", "{$target}/{$file}");
+      }
+    }
+
+    // Successfully loaded content json of file into editor
+    $h5pJson = $this->getContent($source . DIRECTORY_SEPARATOR . 'h5p.json');
+    $contentJson = $this->getContent($contentSource . DIRECTORY_SEPARATOR . 'content.json');
+
+    return (object) array(
+      'h5pJson' => $h5pJson,
+      'contentJson' => $contentJson
+    );
+  }
+
  /**
   * Checks to see if content has the given file.
   * Used when saving content.
@ -386,6 +429,16 @@ class H5PDefaultStorage implements \H5PFileStorage {
    }
  }

+  /**
+   * Check if server setup has write permission to
+   * the required folders
+   *
+   * @return bool True if site can write to the H5P files folder
+   */
+  public function hasWriteAccess() {
+    return self::dirReady($this->path);
+  }
+
  /**
   * Recursive function for copying directories.
   *
@ -472,4 +525,13 @@ class H5PDefaultStorage implements \H5PFileStorage {

    return TRUE;
  }
+
+  /**
+   * Easy helper function for retrieving the editor path
+   *
+   * @return string Path to editor files
+   */
+  private function getEditorPath() {
+    return ($this->alteditorpath !== NULL ? $this->alteditorpath : "{$this->path}/editor");
+  }
 }
--- a/h5p-file-storage.interface.php
+++ b/h5p-file-storage.interface.php
@ -139,7 +139,7 @@ interface H5PFileStorage {
   * The files must be marked as temporary until the content form is saved.
   *
   * @param \H5peditorFile $file
-   * @param int $contentid
+   * @param int $contentId
   */
  public function saveFile($file, $contentId);

@ -148,11 +148,22 @@ interface H5PFileStorage {
   * Used when copy pasting content in H5P.
   *
   * @param string $file path + name
-   * @param string|int $fromid Content ID or 'editor' string
-   * @param int $toid Target Content ID
+   * @param string|int $fromId Content ID or 'editor' string
+   * @param int $toId Target Content ID
   */
  public function cloneContentFile($file, $fromId, $toId);

+  /**
+   * Copy a content from one directory to another. Defaults to cloning
+   * content from the current temporary upload folder to the editor path.
+   *
+   * @param string $source path to source directory
+   * @param string $contentId Id of content
+   *
+   * @return object Object containing h5p json and content json data
+   */
+  public function moveContentDirectory($source, $contentId = NULL);
+
  /**
   * Checks to see if content has the given file.
   * Used when saving content.
@ -171,4 +182,12 @@ interface H5PFileStorage {
   * @param int $contentId
   */
  public function removeContentFile($file, $contentId);
+
+  /**
+   * Check if server setup has write permission to
+   * the required folders
+   *
+   * @return bool True if server has the proper write access
+   */
+  public function hasWriteAccess();
 }
--- a/h5p.classes.php
+++ b/h5p.classes.php
@ -19,11 +19,13 @@ interface H5PFrameworkInterface {
  /**
   * Fetches a file from a remote server using HTTP GET
   *
-   * @param $url
-   * @param $data
+   * @param string $url Where you want to get or send data.
+   * @param array $data Data to post to the URL.
+   * @param bool $blocking Set to 'FALSE' to instantly time out (fire and forget).
+   * @param string $stream Path to where the file should be saved.
   * @return string The content (response body). NULL if something went wrong
   */
-  public function fetchExternalData($url, $data);
+  public function fetchExternalData($url, $data = NULL, $blocking = TRUE, $stream = NULL);

  /**
   * Set the tutorial URL for a library. All versions of the library is set
@ -67,6 +69,14 @@ interface H5PFrameworkInterface {
   */
  public function t($message, $replacements = array());

+  /**
+   * Get URL to file in the specific library
+   * @param string $libraryFolderName
+   * @param string $fileName
+   * @return string URL to file
+   */
+  public function getLibraryFileUrl($libraryFolderName, $fileName);
+
  /**
   * Get the Path to the last uploaded h5p
   *
@ -568,6 +578,14 @@ interface H5PFrameworkInterface {
   * @return boolean
   */
  public function hasPermission($permission, $id = NULL);
+
+  /**
+   * Replaces existing content type cache with the one passed in
+   *
+   * @param object $contentTypeCache Json with an array called 'libraries'
+   *  containing the new content type cache that should replace the old one.
+   */
+  public function replaceContentTypeCache($contentTypeCache);
 }

 /**
@ -713,7 +731,7 @@ class H5PValidator {
    $mainH5pData = null;
    $libraryJsonData = null;
    $contentJsonData = null;
-    $mainH5pExists = $imageExists = $contentExists = FALSE;
+    $mainH5pExists = $contentExists = FALSE;
    foreach ($files as $file) {
      if (in_array(substr($file, 0, 1), array('.', '_'))) {
        continue;
@ -741,10 +759,6 @@ class H5PValidator {
          }
        }
      }
-      // Check for h5p.jpg?
-      elseif (strtolower($file) == 'h5p.jpg') {
-        $imageExists = TRUE;
-      }
      // Content directory holds content.
      elseif ($file == 'content') {
        // We do a separate skipContent check to avoid having the content folder being treated as a library
@ -775,7 +789,7 @@ class H5PValidator {
      }

      // The rest should be library folders
-      elseif ($this->h5pF->mayUpdateLibraries()) {
+      elseif ($this->h5pC->mayUpdateLibraries()) {
         if (!is_dir($filePath)) {
          // Ignore this. Probably a file that shouldn't have been included.
          continue;
@ -858,7 +872,7 @@ class H5PValidator {
        foreach ($missingLibraries as $libString => $library) {
          $this->h5pF->setErrorMessage($this->h5pF->t('Missing required library @library', array('@library' => $libString)));
        }
-        if (!$this->h5pF->mayUpdateLibraries()) {
+        if (!$this->h5pC->mayUpdateLibraries()) {
          $this->h5pF->setInfoMessage($this->h5pF->t("Note that the libraries may exist in the file you uploaded, but you're not allowed to upload new libraries. Contact the site administrator about this."));
        }
      }
@ -929,6 +943,9 @@ class H5PValidator {
      }
    }

+    // Check for icon:
+    $h5pData['hasIcon'] = file_exists($filePath . DIRECTORY_SEPARATOR . 'icon.svg');
+
    $validLibrary = $this->isValidH5pData($h5pData, $file, $this->libraryRequired, $this->libraryOptional);

    $validLibrary = $this->h5pCV->validateContentFiles($filePath, TRUE) && $validLibrary;
@ -1295,7 +1312,7 @@ class H5PStorage {
   * FALSE otherwise
   */
  public function savePackage($content = NULL, $contentMainId = NULL, $skipContent = FALSE, $options = array()) {
-    if ($this->h5pF->mayUpdateLibraries()) {
+    if ($this->h5pC->mayUpdateLibraries()) {
      // Save the libraries we processed during validation
      $this->saveLibraries();
    }
@ -1679,6 +1696,9 @@ Class H5PExport {
 abstract class H5PPermission {
  const DOWNLOAD_H5P = 0;
  const EMBED_H5P = 1;
+  const CREATE_RESTRICTED = 2;
+  const UPDATE_LIBRARIES = 3;
+  const INSTALL_RECOMMENDED = 4;
 }

 abstract class H5PDisplayOptionBehaviour {
@ -1689,6 +1709,9 @@ abstract class H5PDisplayOptionBehaviour {
  const CONTROLLED_BY_PERMISSIONS = 4;
 }

+abstract class H5PHubEndpoints {
+  const CONTENT_TYPES = 'api.h5p.org/v1/content-types/';
+}

 /**
 * Functions and storage shared by the other H5P classes
@ -2401,69 +2424,99 @@ class H5PCore {
  }

  /**
-   * Fetch a list of libraries' metadata from h5p.org.
-   * Save URL tutorial to database. Each platform implementation
-   * is responsible for invoking this, eg using cron
+   * Communicate with H5P.org and get content type cache. Each platform
+   * implementation is responsible for invoking this, eg using cron
+   *
   * @param bool $fetchingDisabled
+   *
+   * @return bool|object Returns endpoint data if found, otherwise FALSE
   */
  public function fetchLibrariesMetadata($fetchingDisabled = FALSE) {
    // Gather data
    $uuid = $this->h5pF->getOption('site_uuid', '');
    $platform = $this->h5pF->getPlatformInfo();
-    $data = array(
-      'api_version' => 2,
+    $registrationData = array(
      'uuid' => $uuid,
      'platform_name' => $platform['name'],
      'platform_version' => $platform['version'],
      'h5p_version' => $platform['h5pVersion'],
      'disabled' => $fetchingDisabled ? 1 : 0,
      'local_id' => hash('crc32', $this->fullPluginPath),
-      'type' => $this->h5pF->getOption('site_type', 'local'),
-      'num_authors' => $this->h5pF->getNumAuthors(),
-      'libraries' => json_encode($this->combineArrayValues(array(
-        'patch' => $this->getLibrariesInstalled(),
-        'content' => $this->h5pF->getLibraryContentCount(),
-        'loaded' => $this->h5pF->getLibraryStats('library'),
-        'created' => $this->h5pF->getLibraryStats('content create'),
-        'createdUpload' => $this->h5pF->getLibraryStats('content create upload'),
-        'deleted' => $this->h5pF->getLibraryStats('content delete'),
-        'resultViews' => $this->h5pF->getLibraryStats('results content'),
-        'shortcodeInserts' => $this->h5pF->getLibraryStats('content shortcode insert')
-      )))
+      'type' => $this->h5pF->getOption('site_type', 'local')
    );

-    // Send request
-    $protocol = (extension_loaded('openssl') ? 'https' : 'http');
-    $result = $this->h5pF->fetchExternalData("{$protocol}://h5p.org/libraries-metadata.json", $data);
-    if (empty($result)) {
-      return;
+    // Register site if it is not registered
+    if (empty($uuid)) {
+      $protocol = (extension_loaded('openssl') ? 'https' : 'http');
+      $endpoint = 'api.h5p.org/v1/sites';
+      $registration = $this->h5pF->fetchExternalData("{$protocol}://{$endpoint}", $registrationData);
+
+      // Failed retrieving uuid
+      if (!$registration) {
+        $errorMessage = $this->h5pF->t('Site could not be registered with the hub. Please contact your site administrator.');
+        H5PCore::ajaxError(
+          $errorMessage,
+          'SITE_REGISTRATION_FAILED'
+        );
+        $this->h5pF->setErrorMessage($errorMessage);
+        $this->h5pF->setErrorMessage(
+          $this->h5pF->t('The H5P Hub has been disabled until this problem can be resolved. You may still upload libraries through the "H5P Libraries" page.')
+        );
+        return FALSE;
+      }
+
+      // Successfully retrieved new uuid
+      $json = json_decode($registration);
+      $registrationData['uuid'] = $json->uuid;
+      $this->h5pF->setOption('site_uuid', $json->uuid);
+      $this->h5pF->setInfoMessage(
+        $this->h5pF->t('Your site was successfully registered with the H5P Hub.')
+      );
+      // TODO: Uncomment when key is once again available in H5P Settings
+//      $this->h5pF->setInfoMessage(
+//        $this->h5pF->t('You have been provided a unique key that identifies you with the Hub when receiving new updates. The key is available for viewing in the "H5P Settings" page.')
+//      );
    }

-    // Process results
-    $json = json_decode($result);
-    if (empty($json)) {
+    if ($this->h5pF->getOption('send_usage_statistics', TRUE)) {
+      $siteData = array_merge(
+        $registrationData,
+        array(
+          'num_authors' => $this->h5pF->getNumAuthors(),
+          'libraries'   => json_encode($this->combineArrayValues(array(
+            'patch'            => $this->getLibrariesInstalled(),
+            'content'          => $this->h5pF->getLibraryContentCount(),
+            'loaded'           => $this->h5pF->getLibraryStats('library'),
+            'created'          => $this->h5pF->getLibraryStats('content create'),
+            'createdUpload'    => $this->h5pF->getLibraryStats('content create upload'),
+            'deleted'          => $this->h5pF->getLibraryStats('content delete'),
+            'resultViews'      => $this->h5pF->getLibraryStats('results content'),
+            'shortcodeInserts' => $this->h5pF->getLibraryStats('content shortcode insert')
+          )))
+        )
+      );
+    }
+    else {
+      $siteData = $registrationData;
+    }
+
+    $result = $this->updateContentTypeCache($siteData);
+
+    // No data received
+    if (!$result || empty($result)) {
      return;
    }

    // Handle libraries metadata
-    if (isset($json->libraries)) {
-      foreach ($json->libraries as $machineName => $libInfo) {
-        if (isset($libInfo->tutorialUrl)) {
-          $this->h5pF->setLibraryTutorialUrl($machineName, $libInfo->tutorialUrl);
+    if (isset($result->libraries)) {
+      foreach ($result->libraries as $library) {
+        if (isset($library->tutorialUrl) && isset($library->machineName)) {
+          $this->h5pF->setLibraryTutorialUrl($library->machineNamee, $library->tutorialUrl);
        }
      }
    }

-    // Handle new uuid
-    if ($uuid === '' && isset($json->uuid)) {
-      $this->h5pF->setOption('site_uuid', $json->uuid);
-    }
-
-    // Handle latest version of H5P
-    if (!empty($json->latest)) {
-      $this->h5pF->setOption('update_available', $json->latest->releasedAt);
-      $this->h5pF->setOption('update_available_path', $json->latest->path);
-    }
+    return $result;
  }

  /**
@ -2677,12 +2730,17 @@ class H5PCore {
   * @param mixed $data
   * @since 1.6.0
   */
-  public static function ajaxSuccess($data = NULL) {
+  public static function ajaxSuccess($data = NULL, $only_data = FALSE) {
    $response = array(
      'success' => TRUE
    );
    if ($data !== NULL) {
      $response['data'] = $data;
+
+      // Pass data flatly to support old methods
+      if ($only_data) {
+        $response = $data;
+      }
    }
    self::printJson($response);
  }
@ -2691,17 +2749,25 @@ class H5PCore {
   * Makes it easier to print response when AJAX request fails.
   * Will exit after printing error.
   *
-   * @param string $message
+   * @param string $message A human readable error message
+   * @param string $error_code An machine readable error code that a client
+   * should be able to interpret
+   * @param null|int $status_code Http response code
   * @since 1.6.0
   */
-  public static function ajaxError($message = NULL) {
+  public static function ajaxError($message = NULL, $error_code = NULL, $status_code = NULL) {
    $response = array(
      'success' => FALSE
    );
    if ($message !== NULL) {
      $response['message'] = $message;
    }
-    self::printJson($response);
+
+    if ($error_code !== NULL) {
+      $response['errorCode'] = $error_code;
+    }
+
+    self::printJson($response, $status_code);
  }

  /**
@ -2709,8 +2775,13 @@ class H5PCore {
   * Makes it easier to respond using JSON.
   *
   * @param mixed $data
+   * @param null|int $status_code Http response code
   */
-  private static function printJson($data) {
+  private static function printJson($data, $status_code = NULL) {
+    if ($status_code !== NULL) {
+      http_response_code($status_code);
+    }
+
    header('Cache-Control: no-cache');
    header('Content-type: application/json; charset=utf-8');
    print json_encode($data);
@ -2755,6 +2826,191 @@ class H5PCore {
    return $token === substr(hash('md5', $action . $time_factor . $_SESSION['h5p_token']), -16, 13) || // Under 12 hours
           $token === substr(hash('md5', $action . ($time_factor - 1) . $_SESSION['h5p_token']), -16, 13); // Between 12-24 hours
  }
+
+  /**
+   * Update content type cache
+   *
+   * @param object $postData Data sent to the hub
+   *
+   * @return bool|object Returns endpoint data if found, otherwise FALSE
+   */
+  public function updateContentTypeCache($postData = NULL) {
+    $interface = $this->h5pF;
+
+    // Make sure data is sent!
+    if (!isset($postData) || !isset($postData['uuid'])) {
+      return $this->fetchLibrariesMetadata();
+    }
+
+    $postData['current_cache'] = $this->h5pF->getOption('content_type_cache_updated_at', 0);
+
+    $protocol = (extension_loaded('openssl') ? 'https' : 'http');
+    $endpoint = H5PHubEndpoints::CONTENT_TYPES;
+    $data = $interface->fetchExternalData("{$protocol}://{$endpoint}", $postData);
+
+    if (! $this->h5pF->getOption('hub_is_enabled', TRUE)) {
+      return TRUE;
+    }
+
+    // No data received
+    if (!$data) {
+      $interface->setErrorMessage(
+        $interface->t("Couldn't communicate with the H5P Hub. Please try again later.")
+      );
+      return FALSE;
+    }
+
+    $json = json_decode($data);
+
+    // No libraries received
+    if (!isset($json->contentTypes) || empty($json->contentTypes)) {
+      $interface->setErrorMessage(
+        $interface->t('No content types were received from the H5P Hub. Please try again later.')
+      );
+      return FALSE;
+    }
+
+    // Replace content type cache
+    $interface->replaceContentTypeCache($json);
+
+    // Inform of the changes and update timestamp
+    $interface->setInfoMessage($interface->t('Library cache was successfully updated!'));
+    $interface->setOption('content_type_cache_updated_at', time());
+    return $data;
+  }
+
+  /**
+   * Check if the current server setup is valid and set error messages
+   *
+   * @return object Setup object with errors and disable hub properties
+   */
+  public function checkSetupErrorMessage() {
+    $setup = (object) array(
+      'errors' => array(),
+      'disable_hub' => FALSE
+    );
+
+    if (!class_exists('ZipArchive')) {
+      $setup->errors[] = $this->h5pF->t('Your PHP version does not support ZipArchive.');
+      $setup->disable_hub = TRUE;
+    }
+
+    if (!extension_loaded('mbstring')) {
+      $setup->errors[] = $this->h5pF->t(
+        'The mbstring PHP extension is not loaded. H5P needs this to function properly'
+      );
+      $setup->disable_hub = TRUE;
+    }
+
+    // Check php version >= 5.2
+    $php_version = explode('.', phpversion());
+    if ($php_version[0] < 5 || ($php_version[0] === 5 && $php_version[1] < 2)) {
+      $setup->errors[] = $this->h5pF->t('Your PHP version is outdated. H5P requires version 5.2 to function properly. Version 5.6 or later is recommended.');
+      $setup->disable_hub = TRUE;
+    }
+
+    // Check write access
+    if (!$this->fs->hasWriteAccess()) {
+      $setup->errors[] = $this->h5pF->t('A problem with the server write access was detected. Please make sure that your server can write to your data folder.');
+      $setup->disable_hub = TRUE;
+    }
+
+    $max_upload_size = self::returnBytes(ini_get('upload_max_filesize'));
+    $max_post_size   = self::returnBytes(ini_get('post_max_size'));
+    $byte_threshold  = 5000000; // 5MB
+    if ($max_upload_size < $byte_threshold) {
+      $setup->errors[] =
+        $this->h5pF->t('Your PHP max upload size is quite small. With your current setup, you may not upload files larger than %number MB. This might be a problem when trying to upload H5Ps, images and videos. Please consider to increase it to more than 5MB.', array('%number' => number_format($max_upload_size / 1024 / 1024, 2, '.', ' ')));
+    }
+
+    if ($max_post_size < $byte_threshold) {
+      $setup->errors[] =
+        $this->h5pF->t('Your PHP max post size is quite small. With your current setup, you may not upload files larger than %number MB. This might be a problem when trying to upload H5Ps, images and videos. Please consider to increase it to more than 5MB', array('%number' => number_format($max_upload_size / 1024 / 1024, 2, '.', ' ')));
+    }
+
+    if ($max_upload_size > $max_post_size) {
+      $setup->errors[] =
+        $this->h5pF->t('Your PHP max upload size is bigger than your max post size. This is known to cause issues in some installations.');
+    }
+
+    // Check SSL
+    if (!extension_loaded('openssl')) {
+      $setup->errors[] =
+        $this->h5pF->t('Your server does not have SSL enabled. SSL should be enabled to ensure a secure connection with the H5P hub.');
+      $setup->disable_hub = TRUE;
+    }
+
+    return $setup;
+  }
+
+  /**
+   * Check that all H5P requirements for the server setup is met.
+   */
+  public function checkSetupForRequirements() {
+    $setup = $this->checkSetupErrorMessage();
+
+    $this->h5pF->setOption('hub_is_enabled', !$setup->disable_hub);
+    if (!empty($setup->errors)) {
+      foreach ($setup->errors as $err) {
+        $this->h5pF->setErrorMessage($err);
+      }
+    }
+
+    if ($setup->disable_hub) {
+      // Inform how to re-enable hub
+      $this->h5pF->setErrorMessage(
+        $this->h5pF->t('H5P hub communication has been disabled because one or more H5P requirements failed.')
+      );
+      $this->h5pF->setErrorMessage(
+        $this->h5pF->t('When you have revised your server setup you may re-enable H5P hub communication in H5P Settings.')
+      );
+    }
+  }
+
+  /**
+   * Return bytes from php_ini string value
+   *
+   * @param string $val
+   *
+   * @return int|string
+   */
+  public static function returnBytes($val) {
+    $val  = trim($val);
+    $last = strtolower($val[strlen($val) - 1]);
+    switch ($last) {
+      case 'g':
+        $val *= 1024;
+      case 'm':
+        $val *= 1024;
+      case 'k':
+        $val *= 1024;
+    }
+
+    return $val;
+  }
+
+  /**
+   * Check if the current user has permission to update and install new
+   * libraries.
+   *
+   * @param bool [$set] Optional, sets the permission
+   * @return bool
+   */
+  public function mayUpdateLibraries($set = null) {
+    static $can;
+
+    if ($set !== null) {
+      // Use value set
+      $can = $set;
+    }
+
+    if ($can === null) {
+      // Ask our framework
+      $can = $this->h5pF->mayUpdateLibraries();
+    }
+
+    return $can;
+  }
 }

 /**
--- a/js/h5p-action-bar.js
+++ b/js/h5p-action-bar.js
@ -36,7 +36,7 @@ H5P.ActionBar = (function ($, EventDispatcher) {
        self.trigger(type);
      };
      H5P.jQuery('<li/>', {
-        'class': 'h5p-button h5p-' + (customClass ? customClass : type),
+        'class': 'h5p-button h5p-noselect h5p-' + (customClass ? customClass : type),
        role: 'button',
        tabindex: 0,
        title: H5P.t(type + 'Description'),
--- a/js/h5p-confirmation-dialog.js
+++ b/js/h5p-confirmation-dialog.js
@ -118,8 +118,8 @@ H5P.ConfirmationDialog = (function (EventDispatcher) {

    // Confirm button
    var confirmButton = document.createElement('button');
-    confirmButton.classList.add('h5p-core-button',
-      'h5p-confirmation-dialog-confirm-button');
+    confirmButton.classList.add('h5p-core-button');
+    confirmButton.classList.add('h5p-confirmation-dialog-confirm-button');
    confirmButton.textContent = options.confirmText;

    // Exit button
--- a/js/h5p-display-options.js
+++ b/js/h5p-display-options.js
@ -2,7 +2,7 @@
 * Utility that makes it possible to hide fields when a checkbox is unchecked
 */
 (function ($) {
-  function setupHiding () {
+  function setupHiding() {
    var $toggler = $(this);

    // Getting the field which should be hidden:
@ -16,8 +16,39 @@
    toggle();
  }

+  function setupRevealing() {
+    var $button = $(this);
+
+    // Getting the field which should have the value:
+    var $input = $('#' + $button.data('control'));
+
+    if (!$input.data('value')) {
+      $button.remove();
+      return;
+    }
+
+    // Setup button action
+    var revealed = false;
+    var text = $button.html();
+    $button.click(function () {
+      if (revealed) {
+        $input.val('');
+        $button.html(text);
+        revealed = false;
+      }
+      else {
+        $input.val($input.data('value'));
+        $button.html($button.data('hide'));
+        revealed = true;
+      }
+    });
+  }
+
  $(document).ready(function () {
    // Get the checkboxes making other fields being hidden:
    $('.h5p-visibility-toggler').each(setupHiding);
+
+    // Get the buttons making other fields have hidden values:
+    $('.h5p-reveal-value').each(setupRevealing);
  });
 })(H5P.jQuery);
--- a/js/settings/h5p-disable-hub.js
+++ b/js/settings/h5p-disable-hub.js
@ -0,0 +1,68 @@
+/* global H5PDisableHubData */
+
+/**
+ * Global data for disable hub functionality
+ *
+ * @typedef {object} H5PDisableHubData Data passed in from the backend
+ *
+ * @property {string} selector Selector for the disable hub check-button
+ * @property {string} overlaySelector Selector for the element that the confirmation dialog will mask
+ * @property {Array} errors Errors found with the current server setup
+ *
+ * @property {string} header Header of the confirmation dialog
+ * @property {string} confirmationDialogMsg Body of the confirmation dialog
+ * @property {string} cancelLabel Cancel label of the confirmation dialog
+ * @property {string} confirmLabel Confirm button label of the confirmation dialog
+ *
+ */
+/**
+ * Utility that makes it possible to force the user to confirm that he really
+ * wants to use the H5P hub without proper server settings.
+ */
+(function ($) {
+
+  $(document).on('ready', function () {
+
+    // No data found
+    if (!H5PDisableHubData) {
+      return;
+    }
+
+    // No errors found, no need for confirmation dialog
+    if (!H5PDisableHubData.errors || !H5PDisableHubData.errors.length) {
+      return;
+    }
+
+    H5PDisableHubData.selector = H5PDisableHubData.selector ||
+      '.h5p-settings-disable-hub-checkbox';
+    H5PDisableHubData.overlaySelector = H5PDisableHubData.overlaySelector ||
+      '.h5p-settings-container';
+
+    var dialogHtml = '<div>' +
+      '<p>' + H5PDisableHubData.errors.join('</p><p>') + '</p>' +
+      '<p>' + H5PDisableHubData.confirmationDialogMsg + '</p>';
+
+    // Create confirmation dialog, make sure to include translations
+    var confirmationDialog = new H5P.ConfirmationDialog({
+      headerText: H5PDisableHubData.header,
+      dialogText: dialogHtml,
+      cancelText: H5PDisableHubData.cancelLabel,
+      confirmText: H5PDisableHubData.confirmLabel
+    }).appendTo($(H5PDisableHubData.overlaySelector).get(0));
+
+    confirmationDialog.on('confirmed', function () {
+      enableButton.get(0).checked = true;
+    });
+
+    confirmationDialog.on('canceled', function () {
+      enableButton.get(0).checked = false;
+    });
+
+    var enableButton = $(H5PDisableHubData.selector);
+    enableButton.change(function () {
+      if ($(this).is(':checked')) {
+        confirmationDialog.show(enableButton.offset().top);
+      }
+    });
+  });
+})(H5P.jQuery);
--- a/styles/h5p-admin.css
+++ b/styles/h5p-admin.css
@ -232,7 +232,8 @@ button.h5p-admin.disabled:hover {
 .h5p-admin-header {
  margin-top: 1.5em;
 }
-#h5p-library-upload-form.h5p-admin-upload-libraries-form {
+#h5p-library-upload-form.h5p-admin-upload-libraries-form,
+#h5p-content-type-cache-update-form.h5p-admin-upload-libraries-form {
  position: relative;
  margin: 0;

--- a/styles/h5p-confirmation-dialog.css
+++ b/styles/h5p-confirmation-dialog.css
@ -113,4 +113,6 @@ button.h5p-confirmation-dialog-exit:hover {

 .h5p-core-button.h5p-confirmation-dialog-confirm-button:before {
  content: "\e601";
+  margin-top: -6px;
+  display: inline-block;
 }
--- a/styles/h5p.css
+++ b/styles/h5p.css
@ -3,11 +3,11 @@
 /* Custom H5P font to use for icons. */
@font-face {
  font-family: 'h5p';
-  src:    url('../fonts/h5p-core-16.eot?80e76o');
-  src:    url('../fonts/h5p-core-16.eot?80e76o#iefix') format('embedded-opentype'),
-  url('../fonts/h5p-core-16.ttf?80e76o') format('truetype'),
-  url('../fonts/h5p-core-16.woff?80e76o') format('woff'),
-  url('../fonts/h5p-core-16.svg?80e76o#h5p-core-15') format('svg');
+  src:    url('../fonts/h5p-core-18.eot?cb8kvi');
+  src:    url('../fonts/h5p-core-18.eot?cb8kvi#iefix') format('embedded-opentype'),
+  url('../fonts/h5p-core-18.ttf?cb8kvi') format('truetype'),
+  url('../fonts/h5p-core-18.woff?cb8kvi') format('woff'),
+  url('../fonts/h5p-core-18.svg?cb8kvi#h5p') format('svg');
  font-weight: normal;
  font-style: normal;
 }
@ -30,6 +30,14 @@ html.h5p-iframe, html.h5p-iframe > body {
  box-sizing: border-box;
  -moz-box-sizing: border-box;
 }
+.h5p-noselect
+{
+  -khtml-user-select: none;
+  -ms-user-select: none;
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  user-select: none;
+}
 html.h5p-iframe .h5p-content {
  font-size: 16px;
  line-height: 1.5em;
@ -147,7 +155,11 @@ div.h5p-fullscreen {
  z-index: 20;
 }
 .h5p-iframe-wrapper iframe.h5p-iframe {
-  width: 100%;
+  /* Hack for IOS landscape / portrait */
+  width: 10px;
+  min-width: 100%;
+  *width: 100%;
+  /* End of hack */
  height: 100%;
  z-index: 10;
  overflow: hidden;
@ -203,11 +215,10 @@ div.h5p-fullscreen {
 }
 .h5p-actions > .h5p-button:before {
  font-family: 'H5P';
-  font-size: 1em;
+  font-size: 20px;
+  line-height: 20px;
+  vertical-align: top;
  padding-right: 0;
-  font-size: 1.7em;
-  line-height: 1.125em;
-  vertical-align: middle;
 }
 .h5p-actions > .h5p-button.h5p-export:before {
  content: "\e893";