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devel:working_example_of_trustexternal

This is an old revision of the document!


After spending way too much time trying to make this work, I finally figured it out. Here are the details you need to know that the docs don't tell you:

  1. The trustExternal method will be called on every page load. However, the $user and $pass parameters are only present when the user first logs in. On all subsequent page loads, they will be empty.
  2. You must fill in the $USERINFO array on every page load

So my solution is to first check the $_SESSION for the previous login. If found, fill the $USERINFO array and return true. Only if this is not found, do we go the database to look for a login.
Here is my complete solution. This example checks a mongodb database, but you should be able to easily change this to use any other datastore.

class auth_mongodb extends auth_basic { var $connection = null; function __construct() { global $config_cascade; global $connection; $this→cando['external'] = true; $this→cando['logout'] = true; $connection = new Mongo(“server_ip”); } function trustExternal($user, $pass, $sticky = false) { global $USERINFO; global $conf; global $connection; $sticky ? $sticky = true : $sticky = false; sanity check if (!empty($_SESSION[DOKU_COOKIE]['auth']['info'])) { $USERINFO['name'] = $_SESSION[DOKU_COOKIE]['auth']['info']['user']; $USERINFO['mail'] = $_SESSION[DOKU_COOKIE]['auth']['info']['mail']; $USERINFO['grps'] = $_SESSION[DOKU_COOKIE]['auth']['info']['grps']; $_SERVER['REMOTE_USER'] = $_SESSION[DOKU_COOKIE]['auth']['user']; return true; } if (!empty($user)) { do the checking here $collection = $connection→DatabaseName→admins; $login = $collection→findOne(array('name' ⇒ $user)); if ($login == null) return false; if ($login['password'] != sha1($login['_id'] . $pass)) { msg('Incorrect username or password.'); return false; } set the globals if authed $USERINFO['name'] = $login['name']; $USERINFO['mail'] = $login['email']; $USERINFO['grps'] = $login['name'] == 'Admin' ? array('admin','user'): array( 'user'); $_SERVER['REMOTE_USER'] = $login['name']; $_SESSION[DOKU_COOKIE]['auth']['user'] = $login['name']; $_SESSION[DOKU_COOKIE]['auth']['mail'] = $login['email']; $_SESSION[DOKU_COOKIE]['auth']['pass'] = $pass; $_SESSION[DOKU_COOKIE]['auth']['info'] = $USERINFO; return true; } else { return false; } } } ''

devel/working_example_of_trustexternal.1352917432.txt.gz · Last modified: 2012-11-14 19:23 by 24.18.245.38