From 2bbc3da52aee81e920e46778d68278bd31f7bb6b Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Wed, 08 Aug 2012 02:44:46 -0400
Subject: [PATCH] - Check request tokens also in devel_mode
---
program/include/rcube_session.php | 169 ++++++++++++++++++++++++++++++++-----------------------
1 files changed, 98 insertions(+), 71 deletions(-)
diff --git a/program/include/rcube_session.php b/program/include/rcube_session.php
index 3986c89..e3b5600 100644
--- a/program/include/rcube_session.php
+++ b/program/include/rcube_session.php
@@ -5,9 +5,12 @@
| program/include/rcube_session.php |
| |
| This file is part of the Roundcube Webmail client |
- | Copyright (C) 2005-2011, The Roundcube Dev Team |
+ | Copyright (C) 2005-2012, The Roundcube Dev Team |
| Copyright (C) 2011, Kolab Systems AG |
- | Licensed under the GNU GPL |
+ | |
+ | Licensed under the GNU General Public License version 3 or |
+ | any later version with exceptions for skins & plugins. |
+ | See the README file for a full license statement. |
| |
| PURPOSE: |
| Provide database supported session management |
@@ -16,9 +19,6 @@
| Author: Thomas Bruederli <roundcube@gmail.com> |
| Author: Aleksander Machniak <alec@alec.pl> |
+-----------------------------------------------------------------------+
-
- $Id: session.inc 2932 2009-09-07 12:51:21Z alec $
-
*/
/**
@@ -37,10 +37,9 @@
private $unsets = array();
private $gc_handlers = array();
private $cookiename = 'roundcube_sessauth';
- private $vars = false;
+ private $vars;
private $key;
private $now;
- private $prev;
private $secret = '';
private $ip_check = false;
private $logging = false;
@@ -52,9 +51,9 @@
*/
public function __construct($db, $config)
{
- $this->db = $db;
- $this->start = microtime(true);
- $this->ip = $_SERVER['REMOTE_ADDR'];
+ $this->db = $db;
+ $this->start = microtime(true);
+ $this->ip = $_SERVER['REMOTE_ADDR'];
$this->logging = $config->get('log_session', false);
$lifetime = $config->get('session_lifetime', 1) * 60;
@@ -62,7 +61,7 @@
// use memcache backend
if ($config->get('session_storage', 'db') == 'memcache') {
- $this->memcache = rcmail::get_instance()->get_memcache();
+ $this->memcache = rcube::get_instance()->get_memcache();
// set custom functions for PHP session management if memcache is available
if ($this->memcache) {
@@ -75,7 +74,7 @@
array($this, 'gc'));
}
else {
- raise_error(array('code' => 604, 'type' => 'db',
+ rcube::raise_error(array('code' => 604, 'type' => 'db',
'line' => __LINE__, 'file' => __FILE__,
'message' => "Failed to connect to memcached. Please check configuration"),
true, true);
@@ -126,20 +125,19 @@
public function db_read($key)
{
$sql_result = $this->db->query(
- "SELECT vars, ip, changed FROM ".get_table_name('session')." WHERE sess_id = ?",
- $key);
+ "SELECT vars, ip, changed FROM ".$this->db->table_name('session')
+ ." WHERE sess_id = ?", $key);
- if ($sql_arr = $this->db->fetch_assoc($sql_result)) {
+ if ($sql_result && ($sql_arr = $this->db->fetch_assoc($sql_result))) {
$this->changed = strtotime($sql_arr['changed']);
$this->ip = $sql_arr['ip'];
$this->vars = base64_decode($sql_arr['vars']);
$this->key = $key;
- if (!empty($this->vars))
- return $this->vars;
+ return !empty($this->vars) ? (string) $this->vars : '';
}
- return false;
+ return null;
}
@@ -156,31 +154,36 @@
$ts = microtime(true);
$now = $this->db->fromunixtime((int)$ts);
+ // no session row in DB (db_read() returns false)
+ if (!$this->key) {
+ $oldvars = null;
+ }
// use internal data from read() for fast requests (up to 0.5 sec.)
- if ($key == $this->key && (!$this->vars || $ts - $this->start < 0.5)) {
+ else if ($key == $this->key && (!$this->vars || $ts - $this->start < 0.5)) {
$oldvars = $this->vars;
- } else { // else read data again from DB
+ }
+ else { // else read data again from DB
$oldvars = $this->db_read($key);
}
- if ($oldvars !== false) {
+ if ($oldvars !== null) {
$newvars = $this->_fixvars($vars, $oldvars);
if ($newvars !== $oldvars) {
$this->db->query(
sprintf("UPDATE %s SET vars=?, changed=%s WHERE sess_id=?",
- get_table_name('session'), $now),
+ $this->db->table_name('session'), $now),
base64_encode($newvars), $key);
}
else if ($ts - $this->changed > $this->lifetime / 2) {
- $this->db->query("UPDATE ".get_table_name('session')." SET changed=$now WHERE sess_id=?", $key);
+ $this->db->query("UPDATE ".$this->db->table_name('session')." SET changed=$now WHERE sess_id=?", $key);
}
}
else {
$this->db->query(
sprintf("INSERT INTO %s (sess_id, vars, ip, created, changed) ".
"VALUES (?, ?, ?, %s, %s)",
- get_table_name('session'), $now, $now),
+ $this->db->table_name('session'), $now, $now),
$key, base64_encode($vars), (string)$this->ip);
}
@@ -193,9 +196,7 @@
*/
private function _fixvars($vars, $oldvars)
{
- $ts = microtime(true);
-
- if ($oldvars !== false) {
+ if ($oldvars !== null) {
$a_oldvars = $this->unserialize($oldvars);
if (is_array($a_oldvars)) {
foreach ((array)$this->unsets as $k)
@@ -217,13 +218,14 @@
* Handler for session_destroy()
*
* @param string Session ID
+ *
* @return boolean True on success
*/
public function db_destroy($key)
{
- $this->db->query(
- sprintf("DELETE FROM %s WHERE sess_id = ?", get_table_name('session')),
- $key);
+ if ($key) {
+ $this->db->query(sprintf("DELETE FROM %s WHERE sess_id = ?", $this->db->table_name('session')), $key);
+ }
return true;
}
@@ -240,7 +242,7 @@
// just delete all expired sessions
$this->db->query(
sprintf("DELETE FROM %s WHERE changed < %s",
- get_table_name('session'), $this->db->fromunixtime(time() - $maxlifetime)));
+ $this->db->table_name('session'), $this->db->fromunixtime(time() - $maxlifetime)));
$this->gc();
@@ -263,12 +265,12 @@
$this->vars = $arr['vars'];
$this->key = $key;
- if (!empty($this->vars))
- return $this->vars;
+ return !empty($this->vars) ? (string) $this->vars : '';
}
- return false;
+ return null;
}
+
/**
* Save session data.
@@ -282,29 +284,38 @@
{
$ts = microtime(true);
+ // no session data in cache (mc_read() returns false)
+ if (!$this->key)
+ $oldvars = null;
// use internal data for fast requests (up to 0.5 sec.)
- if ($key == $this->key && (!$this->vars || $ts - $this->start < 0.5))
+ else if ($key == $this->key && (!$this->vars || $ts - $this->start < 0.5))
$oldvars = $this->vars;
else // else read data again
$oldvars = $this->mc_read($key);
- $newvars = $oldvars !== false ? $this->_fixvars($vars, $oldvars) : $vars;
-
+ $newvars = $oldvars !== null ? $this->_fixvars($vars, $oldvars) : $vars;
+
if ($newvars !== $oldvars || $ts - $this->changed > $this->lifetime / 2)
return $this->memcache->set($key, serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $newvars)), MEMCACHE_COMPRESSED, $this->lifetime);
-
+
return true;
}
+
/**
* Handler for session_destroy() with memcache backend
*
* @param string Session ID
+ *
* @return boolean True on success
*/
public function mc_destroy($key)
{
- return $this->memcache->delete($key);
+ if ($key) {
+ $this->memcache->delete($key);
+ }
+
+ return true;
}
@@ -313,20 +324,8 @@
*/
public function gc()
{
- foreach ($this->gc_handlers as $fct)
+ foreach ($this->gc_handlers as $fct) {
call_user_func($fct);
- }
-
-
- /**
- * Cleanup session data before saving
- */
- public function cleanup()
- {
- // current compose information is stored in $_SESSION['compose'], move it to $_SESSION['compose_data']
- if ($_SESSION['compose']) {
- $_SESSION['compose_data'][$_SESSION['compose']['id']] = $_SESSION['compose'];
- $this->remove('compose');
}
}
@@ -336,10 +335,15 @@
*
* @param mixed Callback function
*/
- public function register_gc_handler($func_name)
+ public function register_gc_handler($func)
{
- if ($func_name && !in_array($func_name, $this->gc_handlers))
- $this->gc_handlers[] = $func_name;
+ foreach ($this->gc_handlers as $handler) {
+ if ($handler == $func) {
+ return;
+ }
+ }
+
+ $this->gc_handlers[] = $func;
}
@@ -352,7 +356,7 @@
{
session_regenerate_id($destroy);
- $this->vars = false;
+ $this->vars = null;
$this->key = session_id();
return true;
@@ -375,15 +379,32 @@
return true;
}
-
+
+
/**
* Kill this session
*/
public function kill()
{
- $this->vars = false;
+ $this->vars = null;
+ $this->ip = $_SERVER['REMOTE_ADDR']; // update IP (might have changed)
$this->destroy(session_id());
- rcmail::setcookie($this->cookiename, '-del-', time() - 60);
+ rcube_utils::setcookie($this->cookiename, '-del-', time() - 60);
+ }
+
+
+ /**
+ * Re-read session data from storage backend
+ */
+ public function reload()
+ {
+ if ($this->key && $this->memcache)
+ $data = $this->mc_read($this->key);
+ else if ($this->key)
+ $data = $this->db_read($this->key);
+
+ if ($data)
+ session_decode($data);
}
@@ -501,7 +522,6 @@
// valid time range is now - 1/2 lifetime to now + 1/2 lifetime
$now = time();
$this->now = $now - ($now % ($this->lifetime / 2));
- $this->prev = $this->now - ($this->lifetime / 2);
}
/**
@@ -572,15 +592,22 @@
$this->log("IP check failed for " . $this->key . "; expected " . $this->ip . "; got " . $_SERVER['REMOTE_ADDR']);
if ($result && $this->_mkcookie($this->now) != $this->cookie) {
- // Check if using id from previous time slot
- if ($this->_mkcookie($this->prev) == $this->cookie) {
- $this->set_auth_cookie();
+ $this->log("Session auth check failed for " . $this->key . "; timeslot = " . date('Y-m-d H:i:s', $this->now));
+ $result = false;
+
+ // Check if using id from a previous time slot
+ for ($i = 1; $i <= 2; $i++) {
+ $prev = $this->now - ($this->lifetime / 2) * $i;
+ if ($this->_mkcookie($prev) == $this->cookie) {
+ $this->log("Send new auth cookie for " . $this->key . ": " . $this->cookie);
+ $this->set_auth_cookie();
+ $result = true;
+ }
}
- else {
- $result = false;
- $this->log("Session authentication failed for " . $this->key . "; invalid auth cookie sent");
- }
- }
+ }
+
+ if (!$result)
+ $this->log("Session authentication failed for " . $this->key . "; invalid auth cookie sent; timeslot = " . date('Y-m-d H:i:s', $prev));
return $result;
}
@@ -592,7 +619,7 @@
function set_auth_cookie()
{
$this->cookie = $this->_mkcookie($this->now);
- rcmail::setcookie($this->cookiename, $this->cookie, 0);
+ rcube_utils::setcookie($this->cookiename, $this->cookie, 0);
$_COOKIE[$this->cookiename] = $this->cookie;
}
@@ -607,14 +634,14 @@
$auth_string = "$this->key,$this->secret,$timeslot";
return "S" . (function_exists('sha1') ? sha1($auth_string) : md5($auth_string));
}
-
+
/**
*
*/
function log($line)
{
if ($this->logging)
- write_log('session', $line);
+ rcube::write_log('session', $line);
}
}
--
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