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<?php
namespace Office365\Runtime\Auth;
use Exception;
use Office365\Runtime\Http\HttpMethod;
use Office365\Runtime\Http\RequestOptions;
use Office365\Runtime\Http\Requests;
/**
* OAuth2 provider to acquire the access token from AAD
*/
class OAuthTokenProvider extends BaseTokenProvider
{
/**
* @var string
*/
private static $TokenEndpoint = '/oauth2/token';
/**
* @var string
*/
//private static $AuthorityUrl = 'https://login.microsoftonline.com/common';
public static $AuthorityUrl = "https://login.microsoftonline.com/";
/**
* @var string
*/
//private static $AuthorizeEndpoint = '/oauth2/authorize';
/**
* @var string
*/
//public static $ResourceId = 'https://outlook.office365.com/';
//private static $ResourceId = 'https://graph.windows.com/';
/**
* @var string
*/
private $authorityUrl;
/**
* @param string $authorityUrl
*/
public function __construct($authorityUrl)
{
$this->authorityUrl = $authorityUrl;
}
/**
* Acquires the access token
* @param array $parameters
* @return mixed
* @throws Exception
*/
public function acquireToken($parameters)
{
$request = $this->prepareTokenRequest($parameters);
$response = Requests::execute($request);
$response->validate();
return $this->normalizeToken($response->getContent());
}
/**
* @param $parameters
* @return RequestOptions
*/
private function prepareTokenRequest($parameters)
{
$tokenUrl = $this->authorityUrl . self::$TokenEndpoint;
$request = new RequestOptions($tokenUrl);
$request->ensureHeader('content-Type', 'application/x-www-form-urlencoded');
$request->Method = HttpMethod::Post;
$request->Data = http_build_query($parameters);
return $request;
}
/**
* Parse the id token that represents a JWT token that contains information about the user
* @param string $tokenValue
* @return mixed
*/
private function normalizeToken($tokenValue)
{
$tokenPayload = json_decode($tokenValue,true);
if (!is_null($tokenPayload)) {
if (isset($tokenPayload['id_token'])) {
$idToken = $tokenPayload['id_token'];
$idTokenPayload = base64_decode(
explode('.', $idToken)[1]
);
$tokenPayload['id_token_info'] = json_decode($idTokenPayload, true);
}
}
return $tokenPayload;
}
}