395 lines
13 KiB
PHP
395 lines
13 KiB
PHP
<?php
|
|
/**
|
|
* StatusNet, the distributed open-source microblogging tool
|
|
*
|
|
* Base class for API actions that require authentication
|
|
*
|
|
* PHP version 5
|
|
*
|
|
* LICENCE: This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* @category API
|
|
* @package StatusNet
|
|
* @author Adrian Lang <mail@adrianlang.de>
|
|
* @author Brenda Wallace <shiny@cpan.org>
|
|
* @author Craig Andrews <candrews@integralblue.com>
|
|
* @author Dan Moore <dan@moore.cx>
|
|
* @author Evan Prodromou <evan@status.net>
|
|
* @author mEDI <medi@milaro.net>
|
|
* @author Sarven Capadisli <csarven@status.net>
|
|
* @author Zach Copley <zach@status.net>
|
|
* @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('GNUSOCIAL')) { exit(1); }
|
|
|
|
/**
|
|
* Actions extending this class will require auth
|
|
*
|
|
* @category API
|
|
* @package StatusNet
|
|
* @author Zach Copley <zach@status.net>
|
|
* @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 $auth_user_nickname = null;
|
|
var $auth_user_password = null;
|
|
|
|
/**
|
|
* 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
|
|
*
|
|
*/
|
|
protected function prepare(array $args=array())
|
|
{
|
|
parent::prepare($args);
|
|
|
|
// NOTE: $this->auth_user has to get set in prepare(), not handle(),
|
|
// because subclasses do stuff with it in their prepares.
|
|
|
|
|
|
// qvitterfix, accepts regular login session
|
|
if (common_logged_in()) {
|
|
$this->scoped = Profile::current();
|
|
$this->auth_user = $this->scoped->getUser();
|
|
if (!$this->auth_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.'));
|
|
}
|
|
$this->access = self::READ_WRITE;
|
|
Event::handle('EndSetApiUser', array($this->auth_user));
|
|
} else {
|
|
$oauthReq = $this->getOAuthRequest();
|
|
|
|
if (!$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);
|
|
}
|
|
}
|
|
|
|
|
|
// NOTE: Make sure we're scoped properly based on the auths!
|
|
if (isset($this->auth_user) && !empty($this->auth_user)) {
|
|
$this->scoped = $this->auth_user->getProfile();
|
|
} else {
|
|
$this->scoped = null;
|
|
}
|
|
|
|
// legacy user transferral
|
|
// TODO: remove when sure no extended classes need it
|
|
$this->user = $this->auth_user;
|
|
|
|
// Reject API calls with the wrong access level
|
|
|
|
if ($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);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 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()
|
|
{
|
|
ApiOAuthAction::cleanRequest();
|
|
|
|
$req = OAuthRequest::from_request();
|
|
|
|
$consumer = $req->get_parameter('oauth_consumer_key');
|
|
$accessToken = $req->get_parameter('oauth_token');
|
|
|
|
// XXX: Is it good enough to assume it's not meant to be an
|
|
// OAuth request if there is no consumer or token? --Z
|
|
|
|
if (empty($consumer) || empty($accessToken)) {
|
|
return false;
|
|
}
|
|
|
|
return $req;
|
|
}
|
|
|
|
/**
|
|
* 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 ApiGNUsocialOAuthDataStore();
|
|
$server = new OAuthServer($datastore);
|
|
$hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
|
|
|
|
$server->add_signature_method($hmac_method);
|
|
|
|
try {
|
|
$server->verify_request($request);
|
|
|
|
$consumer = $request->get_parameter('oauth_consumer_key');
|
|
$access_token = $request->get_parameter('oauth_token');
|
|
|
|
$app = Oauth_application::getByConsumerKey($consumer);
|
|
|
|
if (empty($app)) {
|
|
common_log(
|
|
LOG_WARNING,
|
|
'API OAuth - Couldn\'t find the OAuth app for consumer key: ' .
|
|
$consumer
|
|
);
|
|
// TRANS: OAuth exception thrown when no application is found for a given consumer key.
|
|
throw new OAuthException(_('No application for that consumer key.'));
|
|
}
|
|
|
|
// set the source attr
|
|
if ($app->name != 'anonymous') {
|
|
$this->source = $app->name;
|
|
}
|
|
|
|
|
|
$appUser = Oauth_application_user::getKV('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::getKV('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;
|
|
// FIXME: setting the value returned by common_current_user()
|
|
// There should probably be a better method for this. common_set_user()
|
|
// does lots of session stuff.
|
|
global $_cur;
|
|
$_cur = $this->auth_user;
|
|
Event::handle('EndSetApiUser', array($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.'));
|
|
}
|
|
|
|
} catch (OAuthException $e) {
|
|
$this->logAuthFailure($e->getMessage());
|
|
common_log(LOG_WARNING, 'API OAuthException - ' . $e->getMessage());
|
|
$this->clientError($e->getMessage(), 401);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Does this API resource require authentication?
|
|
*
|
|
* @return boolean true
|
|
*/
|
|
public function requiresAuth()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Check for a user specified via HTTP basic auth. If there isn't
|
|
* one, try to get one by outputting the basic auth header.
|
|
*
|
|
* @return boolean true or false
|
|
*/
|
|
function checkBasicAuthUser($required = true)
|
|
{
|
|
$this->basicAuthProcessHeader();
|
|
|
|
$realm = common_config('api', 'realm');
|
|
|
|
if (empty($realm)) {
|
|
$realm = common_config('site', 'name') . ' API';
|
|
}
|
|
|
|
if (empty($this->auth_user_nickname) && $required) {
|
|
header('WWW-Authenticate: Basic realm="' . $realm . '"');
|
|
|
|
// show error if the user clicks 'cancel'
|
|
// TRANS: Client error thrown when authentication fails becaus a user clicked "Cancel".
|
|
$this->clientError(_('Could not authenticate you.'), 401);
|
|
|
|
} elseif($required) {
|
|
|
|
$user = common_check_user($this->auth_user_nickname,
|
|
$this->auth_user_password);
|
|
|
|
if (Event::handle('StartSetApiUser', array(&$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));
|
|
}
|
|
|
|
$this->access = self::READ_WRITE;
|
|
|
|
if (empty($this->auth_user) && ($required || isset($_SERVER['PHP_AUTH_USER']))) {
|
|
$msg = sprintf(
|
|
"basic auth nickname = %s",
|
|
$this->auth_user_nickname
|
|
);
|
|
$this->logAuthFailure($msg);
|
|
// TRANS: Client error thrown when authentication fails.
|
|
$this->clientError(_('Could not authenticate you.'), 401);
|
|
}
|
|
} else {
|
|
|
|
// all get rw access for actions that don't need auth
|
|
$this->access = self::READ_WRITE;
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Read the HTTP headers and set the auth user. Decodes HTTP_AUTHORIZATION
|
|
* param to support basic auth when PHP is running in CGI mode.
|
|
*
|
|
* @return void
|
|
*/
|
|
function basicAuthProcessHeader()
|
|
{
|
|
$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_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
|
|
// on fcgid server the header name is AUTHORIZATION
|
|
$auth_hash = base64_decode(substr($authorization_header, 6));
|
|
list($this->auth_user_nickname,
|
|
$this->auth_user_password) = explode(':', $auth_hash);
|
|
|
|
// Set all to null on a empty basic auth request
|
|
|
|
if (empty($this->auth_user_nickname)) {
|
|
$this->auth_user_nickname = null;
|
|
$this->auth_password = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Log an API authentication failure. Collect the proxy and IP
|
|
* and log them
|
|
*
|
|
* @param string $logMsg additional log message
|
|
*/
|
|
function logAuthFailure($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);
|
|
}
|
|
}
|