82 lines
2.3 KiB
PHP
82 lines
2.3 KiB
PHP
<?php
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/**
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* Security class
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*
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* Handles authenticating a user via an Apache login box.
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*
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* @package PICKLES
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* @author Joshua Sherman <josh@phpwithpickles.org>
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* @copyright 2007-2008 Joshua Sherman
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* @todo Make the SQL less specific, right now you have to use a table
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* named users, and use the email as the username. I will need to
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* move this to the configuration and allow the user to specify which
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* table to authenticate against, and what column names to use for the
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* username and password.
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*/
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class Security extends Object {
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/**
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* Authenticates the user
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*
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* Checks for the authentication variables to be passed in the $_SERVER super
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* global and attempts to authenticate the user against MySQL. If the user
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* cannot successfully they will be presented with a 401 Unauthorized page.
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*
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* @todo I'm sure someone will find the access denied message offensive, so
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* this will need to be made more generic. May also want to add in the
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* ability for someone to add a custom message and/or landing page in
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* the configuration as well.
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*/
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static function authenticate() {
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$db = DB::getInstance();
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$session = Session::getInstance();
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if (isset($_SERVER['PHP_AUTH_USER'])) {
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$from = '
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FROM users
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WHERE email = "' . $_SERVER['PHP_AUTH_USER'] . '"
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AND password = "' . md5($_SERVER['PHP_AUTH_PW']) . '"
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AND admin = 1;
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';
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$db->execute('SELECT COUNT(id) ' . $from);
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if ($db->getField() != 0) {
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$db->execute('SELECT id ' . $from);
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$session->user_id = $db->getField();
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}
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else {
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$session->user_id = null;
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}
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}
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if (!isset($session->user_id)) {
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header('WWW-Authenticate: Basic realm="Site Admin"');
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header('HTTP/1.0 401 Unauthorized');
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exit('No shirt, no shoes, no salvation. Access denied.');
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}
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else {
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// Commented out to allow navigation to the page intended
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//header('Location: /');
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//exit();
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}
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}
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/**
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* Logs the user out
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*
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* Destroys the session, clears out the authentication variables in the
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* $_SERVER super global and redirects the user to the root of the site.
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*/
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static function logout() {
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$session = Session::getInstance();
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$session->destroy();
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unset($_SERVER['PHP_AUTH_USER']);
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unset($_SERVER['PHP_AUTH_PW']);
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header('Location: /');
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}
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}
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?>
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