public function __construct(SettingsInterface $settings)
{
$this->settings = $settings;
$this->storageUrl = 'https://' . $this->settings->getName() . '.blob.core.windows.net';
$this->restClient = new RestClient($this->storageUrl, $settings, 'BlobAuthorization');
$date = gmdate("D, d M Y H:i:s") . ' GMT';
$this->defaultHeader['x-ms-date'] = $date;
$this->defaultHeader['x-ms-version'] = '2015-02-21';
}
/**
* getCanonicalized
*
* @param string $url
* @param array $queryParams
* @param string $method
* @return string
*/
public function getAuthorizationString($url, $method, array $queryParams, array $header = [])
{
$canonicalizedResource = '/' . $this->settings->getName() . parse_url($url, PHP_URL_PATH);
if (count($queryParams) > 0) {
ksort($queryParams);
}
foreach ($queryParams as $key => $value) {
// Grouping query parameters
$values = explode(',', $value);
sort($values);
$separated = implode(',', $values);
$canonicalizedResource .= "\n" . $key . ':' . $separated;
}
$stringToSign = [];
$stringToSign[] = strtoupper($method);
foreach ($this->fixedHeaders as $headerKey => $headerValue) {
$stringToSign[] = !empty($header[$headerKey]) || is_numeric($header[$headerKey]) ? $header[$headerKey] : $headerValue;
}
if (!empty($header)) {
foreach ($this->canonicalizedHeaders as $headerKey => $headerValue) {
if (!empty($header[$headerKey])) {
$this->canonicalizedHeaders[$headerKey] = $header[$headerKey];
}
}
}
$this->canonicalizedHeaders = array_filter($this->canonicalizedHeaders);
if (count($this->canonicalizedHeaders) > 0) {
$canonicalizedHeaders = [];
foreach ($this->canonicalizedHeaders as $headerKey => $headerValue) {
$canonicalizedHeaders[] = $headerKey . ':' . $headerValue;
}
$stringToSign[] = implode("\n", $canonicalizedHeaders);
}
$stringToSign[] = $canonicalizedResource;
$signature = implode("\n", $stringToSign);
return 'SharedKey ' . $this->settings->getName() . ':' . base64_encode(hash_hmac('sha256', $signature, base64_decode($this->settings->getKey()), true));
}
/**
* getCanonicalized
*
* @param string $url
* @param array $queryParams
* @param string $method
* @return string
*/
public function getAuthorizationString($url, $method, array $queryParams, array $header = [])
{
$result = $this->restClient->send('', 'post', [], [Constants::OAUTH_GRANT_TYPE => Constants::OAUTH_GT_CLIENT_CREDENTIALS, Constants::OAUTH_CLIENT_ID => $this->settings->getName(), Constants::OAUTH_CLIENT_SECRET => $this->settings->getKey(), Constants::OAUTH_SCOPE => Constants::MEDIA_SERVICES_OAUTH_SCOPE], ['Content-Type', 'application/x-www-form-urlencoded']);
return 'Bearer ' . $result->access_token;
}
