* @author mEDI <medi@milaro.net>
* @author Sarven Capadisli <csarven@status.net>
* @author Zach Copley <zach@status.net>
- * @copyright 2009 StatusNet, Inc.
+ * @copyright 2009-2010 StatusNet, Inc.
+ * @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
+/* External API usage documentation. Please update when you change how this method works. */
+
+/*! @page authentication Authentication
+
+ StatusNet supports HTTP Basic Authentication and OAuth for API calls.
+
+ @warning Currently, users who have created accounts without setting a
+ password via OpenID, Facebook Connect, etc., cannot use the API until
+ they set a password with their account settings panel.
+
+ @section HTTP Basic Auth
+
+
+
+ @section OAuth
+
+*/
+
if (!defined('STATUSNET')) {
exit(1);
}
-require_once INSTALLDIR . '/lib/api.php';
-require_once INSTALLDIR . '/lib/apioauthstore.php';
+require_once INSTALLDIR . '/lib/apioauth.php';
/**
* Actions extending this class will require auth
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
-
class ApiAuthAction extends ApiAction
{
- var $access_token;
- var $oauth_access_type;
+ var $auth_user_nickname = null;
+ var $auth_user_password = null;
/**
- * Take arguments for running, and output basic auth header if needed
+ * Take arguments for running, looks for an OAuth request,
+ * and outputs basic auth header if needed
*
* @param array $args $_REQUEST args
*
* @return boolean success flag
*
*/
-
function prepare($args)
{
parent::prepare($args);
- if ($this->requiresAuth()) {
+ // NOTE: $this->auth_user has to get set in prepare(), not handle(),
+ // because subclasses do stuff with it in their prepares.
- $this->consumer_key = $this->arg('oauth_consumer_key');
- $this->access_token = $this->arg('oauth_token');
+ $oauthReq = $this->getOAuthRequest();
- if (!empty($this->access_token)) {
- $this->checkOAuthRequest();
- } else {
- $this->checkBasicAuthUser();
- }
+ if (!$oauthReq) {
+ if ($this->requiresAuth()) {
+ $this->checkBasicAuthUser(true);
+ } else {
+ // Check to see if a basic auth user is there even
+ // if one's not required
+ $this->checkBasicAuthUser(false);
+ }
+ } else {
+ $this->checkOAuthRequest($oauthReq);
+ }
+
+ // Reject API calls with the wrong access level
+
+ if ($this->isReadOnly($args) == false) {
+ if ($this->access != self::READ_WRITE) {
+ // TRANS: Client error 401.
+ $msg = _('API resource requires read-write access, ' .
+ 'but you only have read access.');
+ $this->clientError($msg, 401, $this->format);
+ exit;
+ }
}
return true;
}
- function checkOAuthRequest()
+ /**
+ * Determine whether the request is an OAuth request.
+ * This is to avoid doign any unnecessary DB lookups.
+ *
+ * @return mixed the OAuthRequest or false
+ */
+ function getOAuthRequest()
{
- common_debug("We have an OAuth request.");
-
- $datastore = new ApiStatusNetOAuthDataStore();
- $server = new OAuthServer($datastore);
- $hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
-
- $server->add_signature_method($hmac_method);
-
- $this->cleanRequest();
-
- try {
-
- $req = OAuthRequest::from_request();
- $server->verify_request($req);
-
- common_debug("Good OAuth request!");
-
- $app = Oauth_application::getByConsumerKey($this->consumer_key);
-
- if (empty($app)) {
+ ApiOauthAction::cleanRequest();
- // this should really not happen
- common_log(LOG_WARN,
- "Couldn't find the OAuth app for consumer key: $this->consumer_key");
+ $req = OAuthRequest::from_request();
- throw new OAuthException('No application for that consumer key.');
- }
+ $consumer = $req->get_parameter('oauth_consumer_key');
+ $accessToken = $req->get_parameter('oauth_token');
- $appUser = Oauth_application_user::staticGet('token',
- $this->access_token);
+ // XXX: Is it good enough to assume it's not meant to be an
+ // OAuth request if there is no consumer or token? --Z
- // XXX: check that app->id and appUser->application_id and consumer all
- // match?
-
- if (!empty($appUser)) {
-
- // read or read-write
- $this->oauth_access_type = $appUser->access_type;
-
- // If access_type == 0 we have either a request token
- // or a bad / revoked access token
-
- if ($this->oauth_access_type != 0) {
+ if (empty($consumer) || empty($accessToken)) {
+ return false;
+ }
- $this->auth_user = User::staticGet('id', $appUser->profile_id);
+ return $req;
+ }
- $msg = "API OAuth authentication for user '%s' (id: %d) on behalf of " .
- "application '%s' (id: %d).";
+ /**
+ * Verifies the OAuth request signature, sets the auth user
+ * and access type (read-only or read-write)
+ *
+ * @param OAuthRequest $request the OAuth Request
+ *
+ * @return nothing
+ */
+ function checkOAuthRequest($request)
+ {
+ $datastore = new ApiStatusNetOAuthDataStore();
+ $server = new OAuthServer($datastore);
+ $hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
- common_log(LOG_INFO, sprintf($msg,
- $this->auth_user->nickname,
- $this->auth_user->id,
- $app->name,
- $app->id));
- return true;
- } else {
- throw new OAuthException('Bad access token.');
- }
- } else {
+ $server->add_signature_method($hmac_method);
- // also should not happen
- throw new OAuthException('No user for that token.');
- }
+ try {
+ $server->verify_request($request);
- } catch (OAuthException $e) {
- common_log(LOG_WARN, 'API OAuthException - ' . $e->getMessage());
- common_debug(var_export($req, true));
- $this->showOAuthError($e->getMessage());
- exit();
- }
- }
+ $consumer = $request->get_parameter('oauth_consumer_key');
+ $access_token = $request->get_parameter('oauth_token');
- function showOAuthError($msg)
- {
- header('HTTP/1.1 401 Unauthorized');
- header('Content-Type: text/html; charset=utf-8');
- print $msg . "\n";
- }
+ $app = Oauth_application::getByConsumerKey($consumer);
- function cleanRequest()
- {
- // kill evil effects of magical slashing
+ if (empty($app)) {
+ common_log(
+ LOG_WARNING,
+ 'API OAuth - Couldn\'t find the OAuth app for consumer key: ' .
+ $consumer
+ );
+ // TRANS: OAuth exception thrown when no application is found for a given consumer key.
+ throw new OAuthException(_('No application for that consumer key.'));
+ }
- if(get_magic_quotes_gpc() == 1) {
- $_POST = array_map('stripslashes', $_POST);
- $_GET = array_map('stripslashes', $_GET);
- }
+ // set the source attr
+ if ($app->name != 'anonymous') {
+ $this->source = $app->name;
+ }
- // strip out the p param added in index.php
- // XXX: should we strip anything else? Or alternatively
- // only allow a known list of params?
+ $appUser = Oauth_application_user::staticGet('token', $access_token);
+
+ if (!empty($appUser)) {
+ // If access_type == 0 we have either a request token
+ // or a bad / revoked access token
+
+ if ($appUser->access_type != 0) {
+ // Set the access level for the api call
+ $this->access = ($appUser->access_type & Oauth_application::$writeAccess)
+ ? self::READ_WRITE : self::READ_ONLY;
+
+ // Set the auth user
+ if (Event::handle('StartSetApiUser', array(&$user))) {
+ $user = User::staticGet('id', $appUser->profile_id);
+ if (!empty($user)) {
+ if (!$user->hasRight(Right::API)) {
+ // TRANS: Authorization exception thrown when a user without API access tries to access the API.
+ throw new AuthorizationException(_('Not allowed to use API.'));
+ }
+ }
+ $this->auth_user = $user;
+ Event::handle('EndSetApiUser', array($user));
+ }
+
+ $msg = "API OAuth authentication for user '%s' (id: %d) on behalf of " .
+ "application '%s' (id: %d) with %s access.";
+
+ common_log(
+ LOG_INFO,
+ sprintf(
+ $msg,
+ $this->auth_user->nickname,
+ $this->auth_user->id,
+ $app->name,
+ $app->id,
+ ($this->access = self::READ_WRITE) ? 'read-write' : 'read-only'
+ )
+ );
+ } else {
+ // TRANS: OAuth exception given when an incorrect access token was given for a user.
+ throw new OAuthException(_('Bad access token.'));
+ }
+ } else {
+ // Also should not happen.
+ // TRANS: OAuth exception given when no user was found for a given token (no token was found).
+ throw new OAuthException(_('No user for that token.'));
+ }
- unset($_GET['p']);
- unset($_POST['p']);
+ } catch (OAuthException $e) {
+ $this->logAuthFailure($e->getMessage());
+ common_log(LOG_WARNING, 'API OAuthException - ' . $e->getMessage());
+ $this->clientError($e->getMessage(), 401, $this->format);
+ exit;
+ }
}
/**
*
* @return boolean true
*/
-
function requiresAuth()
{
return true;
*
* @return boolean true or false
*/
-
- function checkBasicAuthUser()
+ function checkBasicAuthUser($required = true)
{
$this->basicAuthProcessHeader();
- $realm = common_config('site', 'name') . ' API';
+ $realm = common_config('api', 'realm');
+
+ if (empty($realm)) {
+ $realm = common_config('site', 'name') . ' API';
+ }
- if (!isset($this->auth_user)) {
+ if (empty($this->auth_user_nickname) && $required) {
header('WWW-Authenticate: Basic realm="' . $realm . '"');
// show error if the user clicks 'cancel'
-
- $this->showBasicAuthError();
+ // TRANS: Client error thrown when authentication fails becaus a user clicked "Cancel".
+ $this->clientError(_('Could not authenticate you.'), 401, $this->format);
exit;
} else {
- $nickname = $this->auth_user;
- $password = $this->auth_pw;
- $user = common_check_user($nickname, $password);
+
+ $user = common_check_user($this->auth_user_nickname,
+ $this->auth_user_password);
+
if (Event::handle('StartSetApiUser', array(&$user))) {
- $this->auth_user = $user;
+
+ if (!empty($user)) {
+ if (!$user->hasRight(Right::API)) {
+ // TRANS: Authorization exception thrown when a user without API access tries to access the API.
+ throw new AuthorizationException(_('Not allowed to use API.'));
+ }
+ $this->auth_user = $user;
+ }
+
Event::handle('EndSetApiUser', array($user));
}
- if (empty($this->auth_user)) {
-
- // basic authentication failed
+ // By default, basic auth users have rw access
+ $this->access = self::READ_WRITE;
- list($proxy, $ip) = common_client_ip();
- common_log(
- LOG_WARNING,
- 'Failed API auth attempt, nickname = ' .
- "$nickname, proxy = $proxy, ip = $ip."
+ if (empty($this->auth_user) && ($required || isset($_SERVER['PHP_AUTH_USER']))) {
+ $msg = sprintf(
+ "basic auth nickname = %s",
+ $this->auth_user_nickname
);
- $this->showBasicAuthError();
+ $this->logAuthFailure($msg);
+ // TRANS: Client error thrown when authentication fails.
+ $this->clientError(_('Could not authenticate you.'), 401, $this->format);
exit;
}
}
- return true;
}
/**
*
* @return void
*/
-
function basicAuthProcessHeader()
{
- if (isset($_SERVER['AUTHORIZATION'])
- || isset($_SERVER['HTTP_AUTHORIZATION'])
- ) {
- $authorization_header = isset($_SERVER['HTTP_AUTHORIZATION'])
- ? $_SERVER['HTTP_AUTHORIZATION'] : $_SERVER['AUTHORIZATION'];
+ $authHeaders = array('AUTHORIZATION',
+ 'HTTP_AUTHORIZATION',
+ 'REDIRECT_HTTP_AUTHORIZATION'); // rewrite for CGI
+ $authorization_header = null;
+ foreach ($authHeaders as $header) {
+ if (isset($_SERVER[$header])) {
+ $authorization_header = $_SERVER[$header];
+ break;
+ }
}
if (isset($_SERVER['PHP_AUTH_USER'])) {
- $this->auth_user = $_SERVER['PHP_AUTH_USER'];
- $this->auth_pw = $_SERVER['PHP_AUTH_PW'];
+ $this->auth_user_nickname = $_SERVER['PHP_AUTH_USER'];
+ $this->auth_user_password = $_SERVER['PHP_AUTH_PW'];
} elseif (isset($authorization_header)
&& strstr(substr($authorization_header, 0, 5), 'Basic')) {
- // decode the HTTP_AUTHORIZATION header on php-cgi server self
+ // Decode the HTTP_AUTHORIZATION header on php-cgi server self
// on fcgid server the header name is AUTHORIZATION
-
$auth_hash = base64_decode(substr($authorization_header, 6));
- list($this->auth_user, $this->auth_pw) = explode(':', $auth_hash);
+ list($this->auth_user_nickname,
+ $this->auth_user_password) = explode(':', $auth_hash);
- // set all to null on a empty basic auth request
+ // Set all to null on a empty basic auth request
- if ($this->auth_user == "") {
- $this->auth_user = null;
- $this->auth_pw = null;
+ if (empty($this->auth_user_nickname)) {
+ $this->auth_user_nickname = null;
+ $this->auth_password = null;
}
- } else {
- $this->auth_user = null;
- $this->auth_pw = null;
}
}
/**
- * Output an authentication error message. Use XML or JSON if one
- * of those formats is specified, otherwise output plain text
+ * Log an API authentication failure. Collect the proxy and IP
+ * and log them
*
- * @return void
+ * @param string $logMsg additional log message
*/
-
- function showBasicAuthError()
- {
- header('HTTP/1.1 401 Unauthorized');
- $msg = 'Could not authenticate you.';
-
- if ($this->format == 'xml') {
- header('Content-Type: application/xml; charset=utf-8');
- $this->startXML();
- $this->elementStart('hash');
- $this->element('error', null, $msg);
- $this->element('request', null, $_SERVER['REQUEST_URI']);
- $this->elementEnd('hash');
- $this->endXML();
- } elseif ($this->format == 'json') {
- header('Content-Type: application/json; charset=utf-8');
- $error_array = array('error' => $msg,
- 'request' => $_SERVER['REQUEST_URI']);
- print(json_encode($error_array));
- } else {
- header('Content-type: text/plain');
- print "$msg\n";
- }
- }
-
+ function logAuthFailure($logMsg)
+ {
+ list($proxy, $ip) = common_client_ip();
+
+ $msg = sprintf(
+ 'API auth failure (proxy = %1$s, ip = %2$s) - ',
+ $proxy,
+ $ip
+ );
+
+ common_log(LOG_WARNING, $msg . $logMsg);
+ }
}
projects / quix0rs-gnu-social.git / blobdiff