]> git.mxchange.org Git - quix0rs-gnu-social.git/blobdiff - lib/apiauth.php
Change to use TagURI::base() instead of common_config()
[quix0rs-gnu-social.git] / lib / apiauth.php
index 3229ab19fda77008691e703e8fe4e8ba5f425694..25e2196cf2c4bc0e004d5eb930146961c35112ab 100644 (file)
@@ -29,7 +29,7 @@
  * @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.
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  * @link      http://status.net/
  */
@@ -39,7 +39,7 @@ if (!defined('STATUSNET')) {
 }
 
 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
@@ -53,11 +53,13 @@ require_once INSTALLDIR . '/lib/apioauthstore.php';
 
 class ApiAuthAction extends ApiAction
 {
-    var $access_token;
-    var $oauth_access_type;
+    var $auth_user_nickname = null;
+    var $auth_user_password = null;
+    var $oauth_source       = 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 $_REQUEST args
      *
@@ -69,118 +71,147 @@ class ApiAuthAction extends ApiAction
     {
         parent::prepare($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) {
+                $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.");
+        ApiOauthAction::cleanRequest();
 
-       $datastore   = new ApiStatusNetOAuthDataStore();
-       $server      = new OAuthServer($datastore);
-       $hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
+        $req  = OAuthRequest::from_request();
 
-       $server->add_signature_method($hmac_method);
+        $consumer    = $req->get_parameter('oauth_consumer_key');
+        $accessToken = $req->get_parameter('oauth_token');
 
-       $this->cleanRequest();
+        // XXX: Is it good enough to assume it's not meant to be an
+        // OAuth request if there is no consumer or token? --Z
 
-       try {
+        if (empty($consumer) || empty($accessToken)) {
+            return false;
+        }
+
+        return $req;
+    }
 
-           $req  = OAuthRequest::from_request();
-           $server->verify_request($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
+     */
 
-           common_debug("Good OAuth request!");
+    function checkOAuthRequest($request)
+    {
+        $datastore   = new ApiStatusNetOAuthDataStore();
+        $server      = new OAuthServer($datastore);
+        $hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
 
-           $app = Oauth_application::getByConsumerKey($this->consumer_key);
+        $server->add_signature_method($hmac_method);
 
-           if (empty($app)) {
+        try {
 
-               // this should really not happen
-               common_log(LOG_WARN,
-                          "Couldn't find the OAuth app for consumer key: $this->consumer_key");
+            $server->verify_request($request);
 
-               throw new OAuthException('No application for that consumer key.');
-           }
+            $consumer     = $request->get_parameter('oauth_consumer_key');
+            $access_token = $request->get_parameter('oauth_token');
 
-           $appUser = Oauth_application_user::staticGet('token',
-                                                        $this->access_token);
+            $app = Oauth_application::getByConsumerKey($consumer);
 
-           // XXX: check that app->id and appUser->application_id and consumer all
-           // match?
+            if (empty($app)) {
+                common_log(LOG_WARNING,
+                           'Couldn\'t find the OAuth app for consumer key: ' .
+                           $consumer);
+                throw new OAuthException('No application for that consumer key.');
+            }
 
-           if (!empty($appUser)) {
+            // set the source attr
 
-               // read or read-write
-               $this->oauth_access_type = $appUser->access_type;
+            $this->oauth_source = $app->name;
 
-               // If access_type == 0 we have either a request token
-               // or a bad / revoked access token
+            $appUser = Oauth_application_user::staticGet('token', $access_token);
 
-               if ($this->oauth_access_type != 0) {
+            if (!empty($appUser)) {
 
-                   $this->auth_user = User::staticGet('id', $appUser->profile_id);
+                // If access_type == 0 we have either a request token
+                // or a bad / revoked access token
 
-                   $msg = "API OAuth authentication for user '%s' (id: %d) on behalf of " .
-                     "application '%s' (id: %d).";
+                if ($appUser->access_type != 0) {
 
-                   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 {
+                    // Set the access level for the api call
 
-               // also should not happen
-               throw new OAuthException('No user for that token.');
-           }
+                    $this->access = ($appUser->access_type & Oauth_application::$writeAccess)
+                      ? self::READ_WRITE : self::READ_ONLY;
 
-       } catch (OAuthException $e) {
-           common_log(LOG_WARN, 'API OAuthException - ' . $e->getMessage());
-           common_debug(var_export($req, true));
-           $this->showOAuthError($e->getMessage());
-           exit();
-       }
-    }
+                    // Set the auth user
 
-    function showOAuthError($msg)
-    {
-       header('HTTP/1.1 401 Unauthorized');
-       header('Content-Type: text/html; charset=utf-8');
-       print $msg . "\n";
-    }
+                    if (Event::handle('StartSetApiUser', array(&$user))) {
+                        $this->auth_user = User::staticGet('id', $appUser->profile_id);
+                        Event::handle('EndSetApiUser', array($user));
+                    }
 
-    function cleanRequest()
-    {
-       // kill evil effects of magical slashing
+                    $msg = "API OAuth authentication for user '%s' (id: %d) on behalf of " .
+                      "application '%s' (id: %d) with %s access.";
 
-       if(get_magic_quotes_gpc() == 1) {
-           $_POST = array_map('stripslashes', $_POST);
-           $_GET = array_map('stripslashes', $_GET);
-       }
+                    common_log(LOG_INFO, sprintf($msg,
+                                                 $this->auth_user->nickname,
+                                                 $this->auth_user->id,
+                                                 $app->name,
+                                                 $app->id,
+                                                 ($this->access = self::READ_WRITE) ?
+                                                 'read-write' : 'read-only'
+                                                 ));
+                } else {
+                    throw new OAuthException('Bad access token.');
+                }
+            } else {
 
-       // strip out the p param added in index.php
+                // Also should not happen
 
-       // XXX: should we strip anything else?  Or alternatively
-       // only allow a known list of params?
+                throw new OAuthException('No user for that token.');
+            }
 
-       unset($_GET['p']);
-       unset($_POST['p']);
+        } catch (OAuthException $e) {
+            common_log(LOG_WARNING, 'API OAuthException - ' . $e->getMessage());
+            $this->showAuthError();
+            exit;
+        }
     }
 
     /**
@@ -201,44 +232,54 @@ class ApiAuthAction extends ApiAction
      * @return boolean true or false
      */
 
-    function checkBasicAuthUser()
+    function checkBasicAuthUser($required = true)
     {
         $this->basicAuthProcessHeader();
 
         $realm = common_config('site', 'name') . ' API';
 
-        if (!isset($this->auth_user)) {
+        if (!isset($this->auth_user_nickname) && $required) {
             header('WWW-Authenticate: Basic realm="' . $realm . '"');
 
             // show error if the user clicks 'cancel'
 
-            $this->showBasicAuthError();
+            $this->showAuthError();
             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)) {
+                    $this->auth_user = $user;
+                }
+
                 Event::handle('EndSetApiUser', array($user));
             }
 
-            if (empty($this->auth_user)) {
+            // By default, basic auth users have rw access
+
+            $this->access = self::READ_WRITE;
+
+            if (empty($this->auth_user) && $required) {
 
                 // basic authentication failed
 
                 list($proxy, $ip) = common_client_ip();
-                common_log(
-                    LOG_WARNING,
-                    'Failed API auth attempt, nickname = ' .
-                    "$nickname, proxy = $proxy, ip = $ip."
-                );
-                $this->showBasicAuthError();
+
+                $msg = sprintf(_('Failed API auth attempt, nickname = %1$s, ' .
+                         'proxy = %2$s, ip = %3$s'),
+                               $this->auth_user_nickname,
+                               $proxy,
+                               $ip);
+                common_log(LOG_WARNING, $msg);
+                $this->showAuthError();
                 exit;
             }
         }
-        return true;
     }
 
     /**
@@ -252,32 +293,30 @@ class ApiAuthAction extends ApiAction
     {
         if (isset($_SERVER['AUTHORIZATION'])
             || isset($_SERVER['HTTP_AUTHORIZATION'])
-        ) {
-                $authorization_header = isset($_SERVER['HTTP_AUTHORIZATION'])
-                ? $_SERVER['HTTP_AUTHORIZATION'] : $_SERVER['AUTHORIZATION'];
+            ) {
+            $authorization_header = isset($_SERVER['HTTP_AUTHORIZATION'])
+              ? $_SERVER['HTTP_AUTHORIZATION'] : $_SERVER['AUTHORIZATION'];
         }
 
         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;
         }
     }
 
@@ -288,7 +327,7 @@ class ApiAuthAction extends ApiAction
      * @return void
      */
 
-    function showBasicAuthError()
+    function showAuthError()
     {
         header('HTTP/1.1 401 Unauthorized');
         $msg = 'Could not authenticate you.';