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authorZach Copley <zach@status.net>2010-01-27 08:41:26 +0000
committerZach Copley <zach@status.net>2010-01-27 08:41:26 +0000
commit923b7de3c661098cfe3d5bdc0878d9329e1ee2bf (patch)
tree290dae082350959ac47ccec6ea7d8e0372a35009 /lib
parent4202ffff9184eaf0934184309ef8f3b9a90d60d9 (diff)
- Check for read-only vs. read-write access to protected API resources (OAuth)
- Some cleanup
Diffstat (limited to 'lib')
-rw-r--r--lib/apiauth.php124
1 files changed, 66 insertions, 58 deletions
diff --git a/lib/apiauth.php b/lib/apiauth.php
index 37070d212..ad9651ff2 100644
--- a/lib/apiauth.php
+++ b/lib/apiauth.php
@@ -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/
*/
@@ -53,9 +53,11 @@ require_once INSTALLDIR . '/lib/apioauth.php';
class ApiAuthAction extends ApiAction
{
- var $access_token;
- var $oauth_access_type;
- var $oauth_source;
+ var $auth_user_nickname = null;
+ var $auth_user_password = null;
+ var $access_token = null;
+ var $oauth_source = null;
+ var $auth_user = null;
/**
* Take arguments for running, and output basic auth header if needed
@@ -70,18 +72,28 @@ class ApiAuthAction extends ApiAction
{
parent::prepare($args);
- if ($this->requiresAuth()) {
+ $this->consumer_key = $this->arg('oauth_consumer_key');
+ $this->access_token = $this->arg('oauth_token');
- $this->consumer_key = $this->arg('oauth_consumer_key');
- $this->access_token = $this->arg('oauth_token');
+ // NOTE: $this->auth_user has to get set in prepare(), not handle(),
+ // because subclasses do stuff with it in their prepares.
+ if ($this->requiresAuth()) {
if (!empty($this->access_token)) {
$this->checkOAuthRequest();
} else {
$this->checkBasicAuthUser();
- // By default, all basic auth users have read and write access
+ }
+
+ // Reject API calls with the wrong access level
- $this->access = self::READ_WRITE;
+ if ($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();
+ }
}
}
@@ -95,8 +107,6 @@ class ApiAuthAction extends ApiAction
function checkOAuthRequest()
{
- common_debug("We have an OAuth request.");
-
$datastore = new ApiStatusNetOAuthDataStore();
$server = new OAuthServer($datastore);
$hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
@@ -114,9 +124,10 @@ class ApiAuthAction extends ApiAction
if (empty($app)) {
- // this should really not happen
- common_log(LOG_WARN,
- "Couldn't find the OAuth app for consumer key: $this->consumer_key");
+ // this should probably not happen
+ common_log(LOG_WARNING,
+ 'Couldn\'t find the OAuth app for consumer key: ' .
+ $this->consumer_key);
throw new OAuthException('No application for that consumer key.');
}
@@ -128,20 +139,18 @@ class ApiAuthAction extends ApiAction
$appUser = Oauth_application_user::staticGet('token',
$this->access_token);
- // XXX: check that app->id and appUser->application_id and consumer all
+ // XXX: Check that app->id and appUser->application_id and consumer all
// match?
if (!empty($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 ($appUser->access_type != 0) {
+
+ // Set the access level for the api call
- // Set the read or read-write access for the api call
$this->access = ($appUser->access_type & Oauth_application::$writeAccess)
? self::READ_WRITE : self::READ_ONLY;
@@ -151,38 +160,34 @@ class ApiAuthAction extends ApiAction
}
$msg = "API OAuth authentication for user '%s' (id: %d) on behalf of " .
- "application '%s' (id: %d).";
+ "application '%s' (id: %d) with %s access.";
common_log(LOG_INFO, sprintf($msg,
$this->auth_user->nickname,
$this->auth_user->id,
$app->name,
- $app->id));
+ $app->id,
+ ($this->access = self::READ_WRITE) ?
+ 'read-write' : 'read-only'
+ ));
return true;
} else {
throw new OAuthException('Bad access token.');
}
} else {
- // also should not happen
+ // Also should not happen
+
throw new OAuthException('No user for that token.');
- }
+ }
} catch (OAuthException $e) {
- common_log(LOG_WARN, 'API OAuthException - ' . $e->getMessage());
- common_debug(var_export($req, true));
- $this->showOAuthError($e->getMessage());
- exit();
+ common_log(LOG_WARNING, 'API OAuthException - ' . $e->getMessage());
+ $this->showAuthError();
+ exit;
}
}
- function showOAuthError($msg)
- {
- header('HTTP/1.1 401 Unauthorized');
- header('Content-Type: text/html; charset=utf-8');
- print $msg . "\n";
- }
-
/**
* Does this API resource require authentication?
*
@@ -207,39 +212,44 @@ class ApiAuthAction extends ApiAction
$realm = common_config('site', 'name') . ' API';
- if (!isset($this->auth_user)) {
+ if (!isset($this->auth_user_nickname)) {
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 = $user;
Event::handle('EndSetApiUser', array($user));
}
+ // By default, basic auth users have rw access
+
+ $this->access = self::READ_WRITE;
+
if (empty($this->auth_user)) {
// 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();
+
+ $this->showAuthError();
exit;
}
}
-
- return true;
}
/**
@@ -253,32 +263,30 @@ class ApiAuthAction extends ApiAction
{
if (isset($_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;
}
}
@@ -289,7 +297,7 @@ class ApiAuthAction extends ApiAction
* @return void
*/
- function showBasicAuthError()
+ function showAuthError()
{
header('HTTP/1.1 401 Unauthorized');
$msg = 'Could not authenticate you.';