Major post review changes
parent
1752d4eccf
commit
f01d002f66
100
h5p.classes.php
100
h5p.classes.php
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@ -11,9 +11,18 @@ interface H5PFrameworkInterface {
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* An associative array containing:
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* An associative array containing:
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* - name: The name of the plattform, for instance "Wordpress"
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* - name: The name of the plattform, for instance "Wordpress"
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* - version: The version of the pattform, for instance "4.0"
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* - version: The version of the pattform, for instance "4.0"
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* - uuid: UUID for site installation
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*/
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*/
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public function getPlatformInfo();
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public function getPlatformInfo();
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/**
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* Set the tutorial URL for a library. All versions of the library is set
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*
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* @param string $machineName
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* @param string $tutorialUrl
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*/
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public function setLibraryTutorialUrl($machineName, $tutorialUrl);
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/**
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/**
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* Show the user an error message
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* Show the user an error message
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*
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*
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@ -2028,6 +2037,34 @@ class H5PCore {
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return $obj ? (object) $newArr : $newArr;
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return $obj ? (object) $newArr : $newArr;
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}
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}
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/**
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* Generates a UUID v4. Taken from: http://php.net/manual/en/function.uniqid.php
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*
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* @return string uuid
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*/
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public static function generateUUID() {
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return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
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// 32 bits for "time_low"
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mt_rand(0, 0xffff), mt_rand(0, 0xffff),
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// 16 bits for "time_mid"
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mt_rand(0, 0xffff),
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// 16 bits for "time_hi_and_version",
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// four most significant bits holds version number 4
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mt_rand(0, 0x0fff) | 0x4000,
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// 16 bits, 8 bits for "clk_seq_hi_res",
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// 8 bits for "clk_seq_low",
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// two most significant bits holds zero and one for variant DCE1.1
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mt_rand(0, 0x3fff) | 0x8000,
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// 48 bits for "node"
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mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
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);
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}
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/**
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/**
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* Check if currently installed H5P libraries are supported by
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* Check if currently installed H5P libraries are supported by
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* the current versjon of core. Which versions of which libraries are supported is
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* the current versjon of core. Which versions of which libraries are supported is
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@ -2157,27 +2194,56 @@ class H5PCore {
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}
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}
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/**
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/**
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* Get a list of libraries' metadata from h5p.org. Cache it, and refetch once a week.
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* Fetch a list of libraries' metadata from h5p.org.
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*
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* Save URL tutorial to database. Each platform implementation
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* @return mixed An object of objects keyed by machineName
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* is responsible for invoking this, eg using cron
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*/
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*/
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public function getLibrariesMetadata() {
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public function fetchLibrariesMetadata($fetchingDisabled = FALSE) {
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// Fetch from cache:
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$metadata = $this->h5pF->cacheGet('libraries','metadata');
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// If not available in cache, or older than a week => refetch!
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if ($metadata === NULL || $metadata->lastTimeFetched < (time() - self::SECONDS_IN_WEEK)) {
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$platformInfo = $this->h5pF->getPlatformInfo();
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$platformInfo = $this->h5pF->getPlatformInfo();
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$json = file_get_contents('http://h5p.org/libraries-metadata.json?platform=' . json_encode($platformInfo));
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$platformInfo['autoFetchingDisabled'] = $fetchingDisabled;
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$json = H5PExternalDataFetcher::fetchJson('http://h5p.lvh.me/h5p.org/libraries-metadata.json?api=1&platform=' . urlencode(json_encode($platformInfo)));
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$metadata = new stdClass();
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if ($json !== NULL) {
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$metadata->json = ($json === FALSE ? NULL : json_decode($json));
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foreach ($json as $machineName => $libInfo) {
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$metadata->lastTimeFetched = time();
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$this->h5pF->setLibraryTutorialUrl($machineName, $libInfo->tutorialUrl);
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}
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$this->h5pF->cacheSet('libraries','metadata', $metadata);
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}
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}
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}
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}
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return $metadata->json;
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/**
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* Class responsible for fetching external data (using http)
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*/
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class H5PExternalDataFetcher {
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public static function fetchJson($url) {
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$json = self::fetch($url);
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return ($json === NULL) ? NULL : json_decode($json);
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}
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public static function fetch($url) {
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if (ini_get('allow_url_fopen') == TRUE) {
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return self::fetchFopen($url);
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}
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else if (function_exists('curl_init')) {
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return self::fetchCurl($url);
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}
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else {
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// Enable 'allow_url_fopen' or install cURL.
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// TODO - this could be reported to the user.
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return NULL;
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}
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}
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private static function fetchFopen($url) {
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return file_get_contents($url);
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}
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private static function fetchCurl($url) {
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$curl = curl_init($url);
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
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$result = curl_exec($curl);
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curl_close($curl);
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return $result;
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}
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}
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}
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}
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