112 lines
3.3 KiB
PHP
112 lines
3.3 KiB
PHP
<?
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require_once(realpath(dirname(__FILE__) . '/open_db.lib.php'));
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$is_admin = FALSE;
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if (isset($_SERVER['HTTPS'])) {
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session_cache_limiter('private');
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session_set_cookie_params(strtotime('+1 year'), '/', '.xxx.org.za', TRUE, TRUE);
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session_start();
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if (isset($_SESSION['editor'])) {
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$is_admin = TRUE;
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$username = $_SESSION['editor'];
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} elseif (check_persistent_login()) {
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// Note that check_persistent_login() sets $_SESSION['editor']
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$is_admin = TRUE;
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$username = $_SESSION['editor'];
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} else {
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$is_admin = FALSE;
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}
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// Don't cache if $is_admin is set
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header( 'Cache-Control: no-store, no-cache, must-revalidate' );
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header( 'Cache-Control: post-check=0, pre-check=0', false );
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header( 'Pragma: no-cache' );
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}
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function check_persistent_login() {
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if (!array_key_exists('PersistentAuth', $_COOKIE)) {
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return false;
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}
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global $db, $is_admin;
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$table = "persistent_sessions";
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open_db('open');
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$cookie_data = $db->real_escape_string($_COOKIE['PersistentAuth']);
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list($username, $key) = explode("|", $cookie_data);
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$username = $db->real_escape_string($username);
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$key = $db->real_escape_string($key);
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$query = "SELECT * FROM $table WHERE ".
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"username LIKE '".$username."' ".
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"LIMIT 1;";
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$getid = $db->query($query) or die("Query failed: ".$db->error());
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$row = $getid->fetch_assoc();
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open_db('close');
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if (isset($row)) {
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// Set up session, and delete old cookie, and create new persistent cookie
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$stored_session = $row['session'];
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if ($stored_session == $key) {
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// login
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$_SESSION['editor'] = $username;
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// delete cookie
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delete_persistent_login();
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// create new cookie
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create_persistent_login($username);
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return true;
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}
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return false;
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}
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return false;
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}
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function create_persistent_login($username) {
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$validity = strtotime('+1 year'); // Time to keep the session valid
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global $db, $is_admin;
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$table = "persistent_sessions";
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open_db('open');
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$username = $db->real_escape_string($username);
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$key = substr(bin2hex(mcrypt_create_iv(100,MCRYPT_DEV_URANDOM)), 0, 200);
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// Add session key to database
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$query = "INSERT INTO $table " . "(username, session) VALUES ('" . $username."', '" . $key . "');";
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$db->query($query) or die("Query failed: ".$db->error());
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open_db('close');
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// Create cookie with key
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setcookie('PersistentAuth', "$username|$key", $validity, '/', '.xxx.org.za', TRUE, TRUE);
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return true;
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}
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function delete_persistent_login() {
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global $db, $is_admin;
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$table = "persistent_sessions";
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open_db('open');
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$cookie_data = $db->real_escape_string($_COOKIE['PersistentAuth']);
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list($username, $key) = explode("|", $cookie_data);
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$username = $db->real_escape_string($username);
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$key = $db->real_escape_string($key);
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// Add session key to database
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$query = "DELETE FROM $table " .
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" WHERE username LIKE '" . $username . "'" .
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" AND session LIKE '" . $key . "';";
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$db->query($query) or die("Query failed: ".$db->error());
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// Reap old sessions
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$query = "DELETE FROM $table " .
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" WHERE created < DATE_SUB(now(), INTERVAL 1 YEAR);";
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$db->query($query) or die("Query failed: ".$db->error());
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open_db('close');
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// Delete cookie
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setcookie("PersistentAuth", false, strtotime('-1 year'), '/', '.xxx.org.za', TRUE, TRUE);
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return true;
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}
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