From ced34cb15e095836767971aa4d27b141fb1d7ec9 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Sat, 18 Oct 2014 08:47:54 -0400
Subject: [PATCH] Merge pull request #230 from bytesatwork-xx/master
---
program/lib/Roundcube/rcube_session.php | 99 +++++++++++++++++++++++++++++++++++++------------
1 files changed, 74 insertions(+), 25 deletions(-)
diff --git a/program/lib/Roundcube/rcube_session.php b/program/lib/Roundcube/rcube_session.php
index 615ec6f..8306a06 100644
--- a/program/lib/Roundcube/rcube_session.php
+++ b/program/lib/Roundcube/rcube_session.php
@@ -3,7 +3,7 @@
/*
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
- | Copyright (C) 2005-2012, The Roundcube Dev Team |
+ | Copyright (C) 2005-2014, The Roundcube Dev Team |
| Copyright (C) 2011, Kolab Systems AG |
| |
| Licensed under the GNU General Public License version 3 or |
@@ -34,6 +34,7 @@
private $changed;
private $time_diff = 0;
private $reloaded = false;
+ private $appends = array();
private $unsets = array();
private $gc_handlers = array();
private $cookiename = 'roundcube_sessauth';
@@ -46,6 +47,13 @@
private $storage;
private $memcache;
+ /**
+ * Blocks session data from being written to database.
+ * Can be used if write-race conditions are to be expected
+ * @var boolean
+ */
+ public $nowrite = false;
+
/**
* Default constructor
@@ -54,7 +62,7 @@
{
$this->db = $db;
$this->start = microtime(true);
- $this->ip = $_SERVER['REMOTE_ADDR'];
+ $this->ip = rcube_utils::remote_addr();
$this->logging = $config->get('log_session', false);
$lifetime = $config->get('session_lifetime', 1) * 60;
@@ -95,6 +103,8 @@
array($this, 'db_write'),
array($this, 'db_destroy'),
array($this, 'gc'));
+
+ $this->table_name = $this->db->table_name('session', true);
}
}
@@ -167,9 +177,8 @@
public function db_read($key)
{
$sql_result = $this->db->query(
- "SELECT vars, ip, changed, " . $this->db->now() . " AS ts"
- . " FROM " . $this->db->table_name('session')
- . " WHERE sess_id = ?", $key);
+ "SELECT `vars`, `ip`, `changed`, " . $this->db->now() . " AS ts"
+ . " FROM {$this->table_name} WHERE `sess_id` = ?", $key);
if ($sql_result && ($sql_arr = $this->db->fetch_assoc($sql_result))) {
$this->time_diff = time() - strtotime($sql_arr['ts']);
@@ -196,9 +205,11 @@
*/
public function db_write($key, $vars)
{
- $now = $this->db->now();
- $table = $this->db->table_name('session');
- $ts = microtime(true);
+ $now = $this->db->now();
+ $ts = microtime(true);
+
+ if ($this->nowrite)
+ return true;
// no session row in DB (db_read() returns false)
if (!$this->key) {
@@ -216,17 +227,18 @@
$newvars = $this->_fixvars($vars, $oldvars);
if ($newvars !== $oldvars) {
- $this->db->query("UPDATE $table "
- . "SET changed = $now, vars = ? WHERE sess_id = ?",
+ $this->db->query("UPDATE {$this->table_name} "
+ . "SET `changed` = $now, `vars` = ? WHERE `sess_id` = ?",
base64_encode($newvars), $key);
}
else if ($ts - $this->changed + $this->time_diff > $this->lifetime / 2) {
- $this->db->query("UPDATE $table SET changed = $now"
- . " WHERE sess_id = ?", $key);
+ $this->db->query("UPDATE {$this->table_name} SET `changed` = $now"
+ . " WHERE `sess_id` = ?", $key);
}
}
else {
- $this->db->query("INSERT INTO $table (sess_id, vars, ip, created, changed)"
+ $this->db->query("INSERT INTO {$this->table_name}"
+ . " (`sess_id`, `vars`, `ip`, `created`, `changed`)"
. " VALUES (?, ?, ?, $now, $now)",
$key, base64_encode($vars), (string)$this->ip);
}
@@ -279,8 +291,7 @@
public function db_destroy($key)
{
if ($key) {
- $this->db->query(sprintf("DELETE FROM %s WHERE sess_id = ?",
- $this->db->table_name('session')), $key);
+ $this->db->query("DELETE FROM {$this->table_name} WHERE `sess_id` = ?", $key);
}
return true;
@@ -333,9 +344,9 @@
$newvars = $oldvars !== null ? $this->_fixvars($vars, $oldvars) : $vars;
- if ($newvars !== $oldvars || $ts - $this->changed > $this->lifetime / 2) {
+ if ($newvars !== $oldvars || $ts - $this->changed > $this->lifetime / 3) {
return $this->memcache->set($key, serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $newvars)),
- MEMCACHE_COMPRESSED, $this->lifetime);
+ MEMCACHE_COMPRESSED, $this->lifetime + 60);
}
return true;
@@ -396,8 +407,8 @@
if ($this->gc_enabled) {
// just delete all expired sessions
if ($this->storage == 'db') {
- $this->db->query("DELETE FROM " . $this->db->table_name('session')
- . " WHERE changed < " . $this->db->now(-$this->gc_enabled));
+ $this->db->query("DELETE FROM {$this->table_name}"
+ . " WHERE `changed` < " . $this->db->now(-$this->gc_enabled));
}
foreach ($this->gc_handlers as $fct) {
@@ -441,8 +452,19 @@
$node = &$this->get_node(explode('.', $path), $_SESSION);
- if ($key !== null) $node[$key] = $value;
- else $node[] = $value;
+ if ($key !== null) {
+ $node[$key] = $value;
+ $path .= '.' . $key;
+ }
+ else {
+ $node[] = $value;
+ }
+
+ $this->appends[] = $path;
+
+ // when overwriting a previously unset variable
+ if ($this->unsets[$path])
+ unset($this->unsets[$path]);
}
@@ -480,7 +502,7 @@
public function kill()
{
$this->vars = null;
- $this->ip = $_SERVER['REMOTE_ADDR']; // update IP (might have changed)
+ $this->ip = rcube_utils::remote_addr(); // update IP (might have changed)
$this->destroy(session_id());
rcube_utils::setcookie($this->cookiename, '-del-', time() - 60);
}
@@ -491,13 +513,40 @@
*/
public function reload()
{
+ // collect updated data from previous appends
+ $merge_data = array();
+ foreach ((array)$this->appends as $var) {
+ $path = explode('.', $var);
+ $value = $this->get_node($path, $_SESSION);
+ $k = array_pop($path);
+ $node = &$this->get_node($path, $merge_data);
+ $node[$k] = $value;
+ }
+
if ($this->key && $this->memcache)
$data = $this->mc_read($this->key);
else if ($this->key)
$data = $this->db_read($this->key);
- if ($data)
+ if ($data) {
session_decode($data);
+
+ // apply appends and unsets to reloaded data
+ $_SESSION = array_merge_recursive($_SESSION, $merge_data);
+
+ foreach ((array)$this->unsets as $var) {
+ if (isset($_SESSION[$var])) {
+ unset($_SESSION[$var]);
+ }
+ else {
+ $path = explode('.', $var);
+ $k = array_pop($path);
+ $node = &$this->get_node($path, $_SESSION);
+ unset($node[$k]);
+ }
+ }
+ }
+
}
/**
@@ -694,10 +743,10 @@
function check_auth()
{
$this->cookie = $_COOKIE[$this->cookiename];
- $result = $this->ip_check ? $_SERVER['REMOTE_ADDR'] == $this->ip : true;
+ $result = $this->ip_check ? rcube_utils::remote_addr() == $this->ip : true;
if (!$result) {
- $this->log("IP check failed for " . $this->key . "; expected " . $this->ip . "; got " . $_SERVER['REMOTE_ADDR']);
+ $this->log("IP check failed for " . $this->key . "; expected " . $this->ip . "; got " . rcube_utils::remote_addr());
}
if ($result && $this->_mkcookie($this->now) != $this->cookie) {
--
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