CYandexOAuthInterface::GetAccessToken

public function GetAccessToken()
{
	if(($tokens = $this->getStorageTokens()) && is_array($tokens))
	{
		$this->access_token = $tokens["OATOKEN"];

		if(!$this->code)
		{
			if($this->checkAccessToken())
			{
				return true;
			}
		}

		$this->deleteStorageTokens();
	}

	if($this->code === false)
	{
		return false;
	}

	$h = new BitrixMainWebHttpClient(array("socketTimeout" => $this->httpTimeout));
	$h->setAuthorization($this->appID, $this->appSecret);

	$result = $h->post(self::TOKEN_URL, array(
		"grant_type"=>"authorization_code",
		"code"=>$this->code,
		"client_id" => $this->appID,
	));

	$this->arResult = BitrixMainWebJson::decode($result);

	if(isset($this->arResult["access_token"]) && $this->arResult["access_token"] <> '')
	{
		// yandex doesn't send refresh tokens but I leave it here in case they will
		if(isset($this->arResult["refresh_token"]) && $this->arResult["refresh_token"] <> '')
		{
			$this->refresh_token = $this->arResult["refresh_token"];
		}
		$this->access_token = $this->arResult["access_token"];
		$this->accessTokenExpires = $this->arResult["expires_in"] + time();

		$_SESSION["OAUTH_DATA"] = array(
			"OATOKEN" => $this->access_token,
		);

		return true;
	}
	return false;
}