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<?php
namespace Kanboard\Core\Http;
use Kanboard\Core\Base;
/**
* OAuth2 Client
*
* @package http
* @author Frederic Guillot
*/
class OAuth2 extends Base
{
protected $clientId;
protected $secret;
protected $callbackUrl;
protected $authUrl;
protected $tokenUrl;
protected $scopes;
protected $tokenType;
protected $accessToken;
/**
* Create OAuth2 service
*
* @access public
* @param string $clientId
* @param string $secret
* @param string $callbackUrl
* @param string $authUrl
* @param string $tokenUrl
* @param array $scopes
* @return OAuth2
*/
public function createService($clientId, $secret, $callbackUrl, $authUrl, $tokenUrl, array $scopes)
{
$this->clientId = $clientId;
$this->secret = $secret;
$this->callbackUrl = $callbackUrl;
$this->authUrl = $authUrl;
$this->tokenUrl = $tokenUrl;
$this->scopes = $scopes;
return $this;
}
/**
* Generate OAuth2 state and return the token value
*
* @access public
* @return string
*/
public function getState()
{
if (! isset($this->sessionStorage->oauthState) || empty($this->sessionStorage->oauthState)) {
$this->sessionStorage->oauthState = $this->token->getToken();
}
return $this->sessionStorage->oauthState;
}
/**
* Check the validity of the state (CSRF token)
*
* @access public
* @param string $state
* @return bool
*/
public function isValidateState($state)
{
return $state === $this->getState();
}
/**
* Get authorization url
*
* @access public
* @return string
*/
public function getAuthorizationUrl()
{
$params = array(
'response_type' => 'code',
'client_id' => $this->clientId,
'redirect_uri' => $this->callbackUrl,
'scope' => implode(' ', $this->scopes),
'state' => $this->getState(),
);
return $this->authUrl.'?'.http_build_query($params);
}
/**
* Get authorization header
*
* @access public
* @return string
*/
public function getAuthorizationHeader()
{
if (strtolower($this->tokenType) === 'bearer') {
return 'Authorization: Bearer '.$this->accessToken;
}
return '';
}
/**
* Get access token
*
* @access public
* @param string $code
* @return string
*/
public function getAccessToken($code)
{
if (empty($this->accessToken) && ! empty($code)) {
$params = array(
'code' => $code,
'client_id' => $this->clientId,
'client_secret' => $this->secret,
'redirect_uri' => $this->callbackUrl,
'grant_type' => 'authorization_code',
'state' => $this->getState(),
);
$response = json_decode($this->httpClient->postForm($this->tokenUrl, $params, array('Accept: application/json')), true);
$this->tokenType = isset($response['token_type']) ? $response['token_type'] : '';
$this->accessToken = isset($response['access_token']) ? $response['access_token'] : '';
}
return $this->accessToken;
}
/**
* Set access token
*
* @access public
* @param string $token
* @param string $type
* @return string
*/
public function setAccessToken($token, $type = 'bearer')
{
$this->accessToken = $token;
$this->tokenType = $type;
}
}
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