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phorge/src/applications/auth/adapter/PhutilOAuthAuthAdapter.php
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PhutilOAuthAuthAdapter.php
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<?php
/**
* Abstract adapter for OAuth2 providers.
*/
abstract class PhutilOAuthAuthAdapter extends PhutilAuthAdapter {
private $clientID;
private $clientSecret;
private $redirectURI;
private $scope;
private $state;
private $code;
private $accessTokenData;
private $oauthAccountData;
abstract protected function getAuthenticateBaseURI();
abstract protected function getTokenBaseURI();
abstract protected function loadOAuthAccountData();
public function getAuthenticateURI() {
$params = array(
'client_id' => $this->getClientID(),
'scope' => $this->getScope(),
'redirect_uri' => $this->getRedirectURI(),
'state' => $this->getState(),
) + $this->getExtraAuthenticateParameters();
$uri = new PhutilURI($this->getAuthenticateBaseURI(), $params);
return phutil_string_cast($uri);
}
public function getAdapterType() {
$this_class = get_class($this);
$type_name = str_replace('PhutilAuthAdapterOAuth', '', $this_class);
return strtolower($type_name);
}
public function setState($state) {
$this->state = $state;
return $this;
}
public function getState() {
return $this->state;
}
public function setCode($code) {
$this->code = $code;
return $this;
}
public function getCode() {
return $this->code;
}
public function setRedirectURI($redirect_uri) {
$this->redirectURI = $redirect_uri;
return $this;
}
public function getRedirectURI() {
return $this->redirectURI;
}
public function getExtraAuthenticateParameters() {
return array();
}
public function getExtraTokenParameters() {
return array();
}
public function getExtraRefreshParameters() {
return array();
}
public function setScope($scope) {
$this->scope = $scope;
return $this;
}
public function getScope() {
return $this->scope;
}
public function setClientSecret(PhutilOpaqueEnvelope $client_secret) {
$this->clientSecret = $client_secret;
return $this;
}
public function getClientSecret() {
return $this->clientSecret;
}
public function setClientID($client_id) {
$this->clientID = $client_id;
return $this;
}
public function getClientID() {
return $this->clientID;
}
public function getAccessToken() {
return $this->getAccessTokenData('access_token');
}
public function getAccessTokenExpires() {
return $this->getAccessTokenData('expires_epoch');
}
public function getRefreshToken() {
return $this->getAccessTokenData('refresh_token');
}
protected function getAccessTokenData($key, $default = null) {
if ($this->accessTokenData === null) {
$this->accessTokenData = $this->loadAccessTokenData();
}
return idx($this->accessTokenData, $key, $default);
}
public function supportsTokenRefresh() {
return false;
}
public function refreshAccessToken($refresh_token) {
$this->accessTokenData = $this->loadRefreshTokenData($refresh_token);
return $this;
}
protected function loadRefreshTokenData($refresh_token) {
$params = array(
'refresh_token' => $refresh_token,
) + $this->getExtraRefreshParameters();
// NOTE: Make sure we return the refresh_token so that subsequent
// calls to getRefreshToken() return it; providers normally do not echo
// it back for token refresh requests.
return $this->makeTokenRequest($params) + array(
'refresh_token' => $refresh_token,
);
}
protected function loadAccessTokenData() {
$code = $this->getCode();
if (!$code) {
throw new PhutilInvalidStateException('setCode');
}
$params = array(
'code' => $this->getCode(),
) + $this->getExtraTokenParameters();
return $this->makeTokenRequest($params);
}
private function makeTokenRequest(array $params) {
$uri = $this->getTokenBaseURI();
$query_data = array(
'client_id' => $this->getClientID(),
'client_secret' => $this->getClientSecret()->openEnvelope(),
'redirect_uri' => $this->getRedirectURI(),
) + $params;
$future = new HTTPSFuture($uri, $query_data);
$future->setMethod('POST');
list($body) = $future->resolvex();
$data = $this->readAccessTokenResponse($body);
if (isset($data['expires_in'])) {
$data['expires_epoch'] = $data['expires_in'];
} else if (isset($data['expires'])) {
$data['expires_epoch'] = $data['expires'];
}
// If we got some "expires" value back, interpret it as an epoch timestamp
// if it's after the year 2010 and as a relative number of seconds
// otherwise.
if (isset($data['expires_epoch'])) {
if ($data['expires_epoch'] < (60 * 60 * 24 * 365 * 40)) {
$data['expires_epoch'] += time();
}
}
if (isset($data['error'])) {
throw new Exception(pht('Access token error: %s', $data['error']));
}
return $data;
}
protected function readAccessTokenResponse($body) {
// NOTE: Most providers either return JSON or HTTP query strings, so try
// both mechanisms. If your provider does something else, override this
// method.
$data = json_decode($body, true);
if (!is_array($data)) {
$data = array();
parse_str($body, $data);
}
if (empty($data['access_token']) &&
empty($data['error'])) {
throw new Exception(
pht('Failed to decode OAuth access token response: %s', $body));
}
return $data;
}
protected function getOAuthAccountData($key, $default = null) {
if ($this->oauthAccountData === null) {
$this->oauthAccountData = $this->loadOAuthAccountData();
}
return idx($this->oauthAccountData, $key, $default);
}
}

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