Fixed problems with latin2 encoding due to changes in htmlspecialchars() behaviour...
[fa-stable.git] / includes / session.inc
index 7cd9d749fe3dcec85b13a5b0f4d43e62fab8f401..73923741b738187335a8baa005930406b8e3459a 100644 (file)
@@ -18,10 +18,14 @@ class SessionManager
                session_name($name);
 
                // Set SSL level
-               $https = isset($secure) ? $secure : isset($_SERVER['HTTPS']);
+               $https = isset($secure) ? $secure : (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
 
                // Set session cookie options
-               session_set_cookie_params($limit, $path, $domain, $https, true);
+               if (version_compare(PHP_VERSION, '5.2', '<')) // avoid failure on older php versions
+                       session_set_cookie_params($limit, $path, $domain, $https);
+               else
+                       session_set_cookie_params($limit, $path, $domain, $https, true);
+
                session_start();
 
                // Make sure the session hasn't expired, and destroy it if it has
@@ -33,7 +37,7 @@ class SessionManager
                                // Reset session data and regenerate id
                                $_SESSION = array();
                                $_SESSION['IPaddress'] = $_SERVER['REMOTE_ADDR'];
-                               $_SESSION['userAgent'] = $_SERVER['HTTP_USER_AGENT'];
+                               $_SESSION['userAgent'] = @$_SERVER['HTTP_USER_AGENT'];
                                $this->regenerateSession();
 
                        // Give a 5% chance of the session id changing on any request
@@ -59,7 +63,7 @@ class SessionManager
                if ($_SESSION['IPaddress'] != $_SERVER['REMOTE_ADDR'])
                        return false;
 
-               if ( $_SESSION['userAgent'] != $_SERVER['HTTP_USER_AGENT'])
+               if ( $_SESSION['userAgent'] != @$_SERVER['HTTP_USER_AGENT'])
                        return false;
 
                return true;
@@ -77,7 +81,6 @@ class SessionManager
 
                // Create new session without destroying the old one
                session_regenerate_id();
                // Grab current session ID and close both sessions to allow other scripts to use them
                $newSession = session_id();
                session_write_close();
@@ -141,6 +144,87 @@ function login_fail()
        die();
 }
 
+function password_reset_fail()
+{
+       global $path_to_root;
+       
+  echo "<center><br><br><font size='5' color='red'><b>" . _("Incorrect Email") . "<b></font><br><br>";
+  echo "<b>" . _("The email address does not exist in the system.") . "<b><br><br>";
+
+  echo _("If you are not an authorized user, please contact your system administrator to obtain an account to enable you to use the system.");
+  echo "<br><a href='$path_to_root/index.php?reset=1'>" . _("Try again") . "</a>";
+  echo "</center>";
+
+       kill_login();
+       die();
+}
+
+function password_reset_success()
+{
+       global $path_to_root;
+
+  echo "<center><br><br><font size='5' color='green'><b>" . _("New password sent") . "<b></font><br><br>";
+  echo "<b>" . _("A new password has been sent to your mailbox.") . "<b><br><br>";
+
+  echo "<br><a href='$path_to_root/index.php'>" . _("Login here") . "</a>";
+  echo "</center>";
+       
+       kill_login();
+       die();
+}
+
+function check_faillog()
+{
+       global $login_delay, $login_faillog, $login_max_attempts;
+
+       $user = $_SESSION["wa_current_user"]->user;
+
+       if (@$login_delay && (@$login_faillog[$user][$_SERVER['REMOTE_ADDR']] >= @$login_max_attempts) && (time() < $login_faillog[$user]['last'] + $login_delay))
+               return true;
+
+       return false;
+}
+/*
+       Simple brute force attack detection is performed before connection to company database is open. Therefore access counters have to be stored in file.
+       Login attempts counter is created for every new user IP, which partialy prevent DOS attacks.
+*/
+function write_login_filelog($login, $result)
+{
+       global $login_faillog, $login_max_attempts, $path_to_root;
+
+       $user = $_SESSION["wa_current_user"]->user;
+
+       $ip = $_SERVER['REMOTE_ADDR'];
+
+       if (!isset($login_faillog[$user][$ip]) || $result) // init or reset on successfull login
+               $login_faillog[$user] = array($ip => 0, 'last' => '');
+
+       if (!$result)
+       {
+               if ($login_faillog[$user][$ip] < @$login_max_attempts) {
+
+                       $login_faillog[$user][$ip]++;
+               } else {
+                       $login_faillog[$user][$ip] = 0; // comment out to restart counter only after successfull login.
+                       error_log(sprintf(_("Brute force attack on account '%s' detected. Access for non-logged users temporarily blocked."     ), $login));
+               }
+               $login_faillog[$user]['last'] = time();
+       }
+
+       $msg = "<?php\n";
+       $msg .= "/*\n";
+       $msg .= "Login attempts info.\n";
+       $msg .= "*/\n";
+       $msg .= "\$login_faillog = " .var_export($login_faillog, true). ";\n";
+
+       $filename = $path_to_root."/tmp/faillog.php";
+
+       if ((!file_exists($filename) && is_writable($path_to_root)) || is_writable($filename))
+       {
+               file_put_contents($filename, $msg);
+       }
+}
+
 //----------------------------------------------------------------------------------------
 
 function check_page_security($page_security)
@@ -232,7 +316,7 @@ function html_cleanup(&$parms)
                if (is_array($value))
                        html_cleanup($parms[$name]);
                else
-                       $parms[$name] = @htmlspecialchars($value, ENT_QUOTES, $_SESSION['language']->encoding);
+                       $parms[$name] = @htmlspecialchars($value, ENT_QUOTES, $_SESSION['language']->encoding=='iso-8859-2' ? 'ISO-8859-1' : $_SESSION['language']->encoding);
        }
        reset($parms); // needed for direct key() usage later throughout the sources
 }
@@ -258,6 +342,16 @@ if (!isset($path_to_root))
        $path_to_root = ".";
 }
 
+//----------------------------------------------------------------------------------------
+// set to reasonable values if not set in config file (pre-2.3.12 installations)
+
+if ((!isset($login_delay)) || ($login_delay < 0))
+    $login_delay = 10;
+
+if ((!isset($login_max_attempts)) || ($login_max_attempts < 0))
+    $login_max_attempts = 3; 
+
+
 // Prevent register_globals vulnerability
 if (isset($_GET['path_to_root']) || isset($_POST['path_to_root']))
        die("Restricted access");
@@ -303,6 +397,9 @@ header("Cache-control: private");
 include_once($path_to_root . "/config.php");
 get_text_init();
 
+if ($login_delay > 0)
+       @include_once($path_to_root . "/tmp/faillog.php");
+
 // Page Initialisation
 if (!isset($_SESSION['language']) || !method_exists($_SESSION['language'], 'set_language')) 
 {
@@ -344,7 +441,7 @@ html_cleanup($_SERVER);
 
 // logout.php is the only page we should have always 
 // accessable regardless of access level and current login status.
-if (strstr($_SERVER['PHP_SELF'], 'logout.php') == false){
+if (!defined('FA_LOGOUT_PHP_FILE')){
 
        login_timeout();
 
@@ -355,12 +452,40 @@ if (strstr($_SERVER['PHP_SELF'], 'logout.php') == false){
 
        if (!$_SESSION["wa_current_user"]->logged_in())
        {
+      if (@$allow_password_reset && !$allow_demo_mode
+        && (isset($_GET['reset']) || isset($_POST['email_entry_field']))) {
+                 if (!isset($_POST["email_entry_field"])) {
+        include($path_to_root . "/access/password_reset.php");
+        exit();
+      }
+      else {
+        if (isset($_POST["company_login_nickname"]) && !isset($_POST["company_login_name"])) {
+          for ($i = 0; $i < count($db_connections); $i++) {
+            if ($db_connections[$i]["name"] == $_POST["company_login_nickname"]) {
+              $_POST["company_login_name"] = $i;
+              unset($_POST["company_login_nickname"]);
+              break 1; // cannot pass variables to break from PHP v5.4 onwards
+            }
+          }
+        }
+        $_succeed = isset($db_connections[$_POST["company_login_name"]]) &&
+          $_SESSION["wa_current_user"]->reset_password($_POST["company_login_name"],
+          $_POST["email_entry_field"]);
+        if ($_succeed)
+        {
+          password_reset_success();
+        }
+
+        password_reset_fail();
+      }
+    }
                // Show login screen
                if (!isset($_POST["user_name_entry_field"]) or $_POST["user_name_entry_field"] == "")
                {
                        // strip ajax marker from uri, to force synchronous page reload
                        $_SESSION['timeout'] = array( 'uri'=>preg_replace('/JsHttpRequest=(?:(\d+)-)?([^&]+)/s',
-                                       '', @htmlspecialchars($_SERVER['REQUEST_URI'], ENT_QUOTES, $_SESSION['language']->encoding)), 
+                                       '', @htmlspecialchars($_SERVER['REQUEST_URI'], ENT_QUOTES, $_SESSION['language']->encoding=='iso-8859-2'
+                                                ? 'ISO-8859-1' : $_SESSION['language']->encoding)), 
                                'post' => $_POST);
 
                        include($path_to_root . "/access/login.php");
@@ -368,7 +493,15 @@ if (strstr($_SERVER['PHP_SELF'], 'logout.php') == false){
                                $Ajax->activate('_page_body');
                        exit;
                } else {
-
+                       if (isset($_POST["company_login_nickname"]) && !isset($_POST["company_login_name"])) {
+                               for ($i = 0; $i < count($db_connections); $i++) {
+                                       if ($db_connections[$i]["name"] == $_POST["company_login_nickname"]) {
+                                               $_POST["company_login_name"] = $i;
+                                               unset($_POST["company_login_nickname"]);
+                                               break 1; // cannot pass variables to break from PHP v5.4 onwards
+                                       }
+                               }
+                       }
                        $succeed = isset($db_connections[$_POST["company_login_name"]]) &&
                                $_SESSION["wa_current_user"]->login($_POST["company_login_name"],
                                $_POST["user_name_entry_field"], $_POST["password"]);
@@ -379,6 +512,14 @@ if (strstr($_SERVER['PHP_SELF'], 'logout.php') == false){
                        // Incorrect password
                                login_fail();
                        }
+                       elseif(isset($_SESSION['timeout']) && !$_SESSION['timeout']['post'])
+                       {
+                               // in case of GET request redirect to avoid confirmation dialog 
+                               // after return from menu option
+                               header("HTTP/1.1 303 See Other");
+                               header("Location: ".$_SESSION['timeout']['uri']);
+                               exit();
+                       }
                        $lang = &$_SESSION['language'];
                        $lang->set_language($_SESSION['language']->code);
                }
@@ -397,4 +538,4 @@ $SysPrefs = &$_SESSION['SysPrefs'];
 // We quote all values later with db_escape() before db update.
 $_POST = strip_quotes($_POST);
 
-?>
\ No newline at end of file
+?>