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LDAPAccountManager/lam/templates/login.php

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<?php
/*
$Id$
This code is part of LDAP Account Manager (http://www.sourceforge.net/projects/lam)
Copyright (C) 2003 - 2006 Michael Duergner
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* Login form of LDAP Account Manager.
*
* @author Michael Duergner
* @package main
*/
/** status messages */
include_once("../lib/status.inc");
/** security functions */
include_once("../lib/security.inc");
/** self service functions */
include_once("../lib/selfService.inc");
// check environment
$criticalErrors = array();
// check if PHP has session support
if (! function_exists('session_start')) {
$criticalErrors[] = array("ERROR", "Your PHP has no session support!", "Please install the session extension for PHP.");
}
// check if PHP has LDAP support
if (! function_exists('ldap_search')) {
$criticalErrors[] = array("ERROR", "Your PHP has no LDAP support!", "Please install the LDAP extension for PHP.");
}
// check if PHP has gettext support
if (! function_exists('gettext') || !function_exists('_')) {
$criticalErrors[] = array("ERROR", "Your PHP has no gettext support!", "Please install gettext for PHP.");
}
// check if PHP has XML support
if (! function_exists('utf8_decode')) {
$criticalErrors[] = array("ERROR", "Your PHP has no XML support!", "Please install the XML extension for PHP.");
}
// check if PHP >= 5.1
if (version_compare(phpversion(), '5.1.0') < 0) {
$criticalErrors[] = array("ERROR", "LAM needs PHP 5 greater or equal as 5.1.0!", "Please upgrade your PHP installation.");
}
// check file permissions
$writableDirs = array('sess', 'tmp');
for ($i = 0; $i < sizeof($writableDirs); $i++) {
$path = realpath('../') . "/" . $writableDirs[$i];
if (!is_writable($path)) {
$criticalErrors[] = array("ERROR", 'The directory %s is not writable for the web server. Please change your file permissions.', '', array($path));
}
}
// check session auto start
if (ini_get("session.auto_start") == "1") {
$criticalErrors[] = array("ERROR", "Please deactivate session.auto_start in your php.ini. LAM will not work if it is activated.");
}
$memLimit = ini_get('memory_limit');
if (isset($memLimit) && ($memLimit != '') && (substr(strtoupper($memLimit), strlen($memLimit) - 1) == 'M')) {
if (intval(substr($memLimit, 0, strlen($memLimit) - 1)) < 64) {
$criticalErrors[] = array("ERROR", "Please increase the \"memory_limit\" parameter in your php.ini to at least \"64M\".",
"Your current memory limit is $memLimit.");
}
}
// stop login if critical errors occured
if (sizeof($criticalErrors) > 0) {
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
echo "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n\n";
echo "<html>\n<head>\n";
echo "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\">\n";
echo "<meta http-equiv=\"pragma\" content=\"no-cache\">\n <meta http-equiv=\"cache-control\" content=\"no-cache\">\n";
echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../style/layout.css\">\n";
echo "<link rel=\"shortcut icon\" type=\"image/x-icon\" href=\"../graphics/favicon.ico\">\n";
echo "<title>LDAP Account Manager</title>\n";
echo "</head><body>\n";
for ($i = 0; $i < sizeof($criticalErrors); $i++) {
call_user_func_array("StatusMessage", $criticalErrors[$i]);
echo "<br><br>";
}
echo "</body></html>";
exit();
}
/** access to configuration options */
include_once("../lib/config.inc"); // Include config.inc which provides Config class
session_save_path("../sess"); // Set session save path
session_start(); // Start LDAP Account Manager session
/**
* Displays the login window.
*
* @param object $config_object current active configuration
*/
function display_LoginPage($config_object) {
global $error_message;
// generate 256 bit key and initialization vector for user/passwd-encryption
// check if we can use /dev/random otherwise use /dev/urandom or rand()
if(function_exists('mcrypt_create_iv')) {
$key = @mcrypt_create_iv(32, MCRYPT_DEV_URANDOM);
if (! $key) {
srand((double)microtime()*1234567);
$key = mcrypt_create_iv(32, MCRYPT_RAND);
}
$iv = @mcrypt_create_iv(32, MCRYPT_DEV_URANDOM);
if (! $iv) {
srand((double)microtime()*1234567);
$iv = mcrypt_create_iv(32, MCRYPT_RAND);
}
// save both in cookie
setcookie("Key", base64_encode($key), 0, "/");
setcookie("IV", base64_encode($iv), 0, "/");
}
$_SESSION['language'] = $config_object->get_defaultLanguage();
$current_language = explode(":",$_SESSION['language']);
$_SESSION['header'] = "<?xml version=\"1.0\" encoding=\"" . $current_language[1] . "\"?>\n";
$_SESSION['header'] .= "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n\n";
$_SESSION['header'] .= "<html>\n<head>\n";
$_SESSION['header'] .= "<meta http-equiv=\"content-type\" content=\"text/html; charset=" . $current_language[1] . "\">\n";
$_SESSION['header'] .= "<meta http-equiv=\"pragma\" content=\"no-cache\">\n <meta http-equiv=\"cache-control\" content=\"no-cache\">";
// loading available languages from language.conf file
$languagefile = "../config/language";
if(is_file($languagefile) == True)
{
$file = fopen($languagefile, "r");
$i = 0;
while(!feof($file))
{
$line = fgets($file, 1024);
if($line == "" || $line == "\n" || $line[0] == "#") continue; // ignore comment and empty lines
$value = explode(":", $line);
$languages[$i]["link"] = $value[0] . ":" . $value[1];
$languages[$i]["descr"] = $value[2];
if(rtrim($line) == $_SESSION["language"])
{
$languages[$i]["default"] = "YES";
}
else
{
$languages[$i]["default"] = "NO";
}
$i++;
}
fclose($file);
}
$profiles = getConfigProfiles();
setlanguage(); // setting correct language
echo $_SESSION["header"];
?>
<title>LDAP Account Manager -Login-</title>
<link rel="stylesheet" type="text/css" href="../style/layout.css">
<link rel="shortcut icon" type="image/x-icon" href="../graphics/favicon.ico">
</head>
<body>
<?php
// set focus on password field
echo "<script type=\"text/javascript\" language=\"javascript\">\n";
echo "<!--\n";
echo "window.onload = function() {\n";
echo "loginField = document.getElementsByName('passwd')[0];\n";
echo "loginField.focus();\n";
echo "}\n";
echo "//-->\n";
echo "</script>\n";
?>
<p align="center">
<a href="http://lam.sourceforge.net" target="_blank"><img src="../graphics/banner.jpg" border="1" alt="LDAP Account Manager"></a>
</p>
<table width="100%" border="0">
<tr>
<TD width="50%" align="left">
<?PHP
if (!isLAMProVersion()) {
echo "<a href=\"http://lam.sourceforge.net/lamPro/index.htm\">" . _("Want more features? Get LAM Pro!") . "</a>";
}
?>
</TD>
<td width="50%" align="right">
<a href="./config/index.php"><IMG alt="configuration" src="../graphics/tools.png">&nbsp;<?php echo _("LAM configuration") ?></a>
</td>
</tr>
</table>
<hr><br><br>
<?php
// check extensions
$extList = getRequiredExtensions();
for ($i = 0; $i < sizeof($extList); $i++) {
if (!extension_loaded($extList[$i])) {
StatusMessage("ERROR", "A required PHP extension is missing!", $extList[$i]);
echo "<br>";
}
}
// check if session expired
if (isset($_GET['expired'])) {
StatusMessage("ERROR", _("Your session expired, please log in again."));
echo "<br>";
}
?>
<table width="650" align="center" border="2" rules="none" bgcolor="white">
<tr>
<td style="border-style:none" width="70" rowspan="2">
<img src="../graphics/lam.png" alt="Logo">
</td>
<td style="border-style:none" width="580">
<form action="login.php" method="post">
<table width="580">
<tr>
<td style="border-style:none" height="70" colspan="2" align="center">
<font color="#000080"><b><big><?php echo _("Please select your user name and enter your password to log in."); ?></big></b></font>
</td>
</tr>
<tr>
<td style="border-style:none" height="35" align="right"><b>
<?php
echo _("User name") . ":";
?>
</b>&nbsp;&nbsp;</td>
<td style="border-style:none" height="35" align="left">
<select name="username" size="1" tabindex="0">
<?php
$admins = $config_object->get_Admins();
for($i = 0; $i < count($admins); $i++) {
$text = explode(",", $admins[$i]);
$text = explode("=", $text[0]);
?>
<option value="<?php echo $admins[$i]; ?>"><?php echo $text[1]; ?></option>
<?php
}
?>
</select>
</td>
</tr>
<tr>
<td style="border-style:none" height="35" align="right"><b>
<?php
echo _("Password") . ":";
?>
</b>&nbsp;&nbsp;</td>
<td style="border-style:none" height="35" align="left">
<input type="password" name="passwd" tabindex="1">
</td>
</tr>
<tr>
<td style="border-style:none" align="right"><b>
<?php
echo _("Language") . ":";
?>
</b>&nbsp;&nbsp;</td>
<td style="border-style:none" height="35" align="left">
<select name="language" size="1" tabindex="2">
<?php
for($i = 0; $i < count($languages); $i++) {
if($languages[$i]["default"] == "YES") {
?>
<option selected value="<?php echo $languages[$i]["link"] . ":" . $languages[$i]["descr"]; ?>"><?php echo $languages[$i]["descr"]; ?></option>
<?php
}
else
{
?>
<option value="<?php echo $languages[$i]["link"] . ":" . $languages[$i]["descr"]; ?>"><?php echo $languages[$i]["descr"]; ?></option>
<?php
}
}
?>
</select>
</td>
</tr>
<tr>
<td style="border-style:none" height="50" colspan="2" align="center">
<input name="checklogin" type="hidden" value="checklogin">
<input name="submit" type="submit" value="<?php echo _("Login"); ?>" tabindex="3">
</td>
</tr>
<tr>
<td style="border-style:none" colspan="2" align="center">
<?php
if($error_message != "") {
echo "<font color=\"red\"><b>" . $error_message . "</b></font>";
}
?>
</td>
</tr>
</table>
</form>
</td>
</tr>
<tr>
<td style="border-style:none">
<form action="login.php" method="post">
<table width="580">
<tr>
<td style="border-style:none" height="30" colspan="2">
<hr>
<b>
<?php
echo _("LDAP server") . ": ";
?></b>
<?php echo $config_object->get_ServerURL(); ?>
</td>
</tr>
<tr>
<td style="border-style:none" height="30"><b>
<?php
echo _("Server profile") . ": ";
if(empty($_POST['profileChange'])) {
$_POST['profile'] = $_SESSION['config']->getName();
}
?></b>
<?php echo $_POST['profile']; ?>
</td>
<td style="border-style:none" height="30" align="right">
<select name="profile" size="1" tabindex="4">
<?php
for($i=0;$i<count($profiles);$i++) {
?>
<option value="<?php echo $profiles[$i]; ?>"><?php echo $profiles[$i]; ?></option>
<?php
}
?>
</select>
<input name="profileChange" type="hidden" value="profileChange">
<input name="submit" type="submit" value="<?php echo _("Change profile"); ?>" tabindex="5">
</td>
</tr>
<tr>
<td style="border-style:none" height="10" colspan="2"></td>
</tr>
</table>
</form>
</td>
</tr>
</table>
<br><br>
<TABLE style="position:absolute; bottom:10px;" border="0" width="99%">
<TR><TD align="right"><HR>
<SMALL>
<?php
if (isLAMProVersion()) {
echo "LDAP Account Manager <b>Pro</b>: <b>" . LAMVersion() . "</b>&nbsp;&nbsp;&nbsp;";
}
else {
echo "LDAP Account Manager: <b>" . LAMVersion() . "</b>&nbsp;&nbsp;&nbsp;";
}
?>
</SMALL>
</TD></TR>
</TABLE>
</body>
</html>
<?php
}
// checking if the submitted username/password is correct.
if(!empty($_POST['checklogin']))
{
$_SESSION['lampath'] = realpath('../') . "/"; // Save full path to lam in session
include_once("../lib/ldap.inc"); // Include ldap.php which provides Ldap class
$_SESSION['ldap'] = new Ldap($_SESSION['config']); // Create new Ldap object
if($_POST['passwd'] == "")
{
$error_message = _("Empty password submitted. Please try again.");
display_LoginPage($_SESSION['config']); // Empty password submitted. Return to login page.
}
else
{
if (get_magic_quotes_gpc() == 1) {
$_POST['passwd'] = stripslashes($_POST['passwd']);
}
$result = $_SESSION['ldap']->connect($_POST['username'],$_POST['passwd']); // Connect to LDAP server for verifing username/password
if($result === 0) // Username/password correct. Do some configuration and load main frame.
{
$_SESSION['loggedIn'] = true;
$_SESSION['language'] = $_POST['language']; // Write selected language in session
$current_language = explode(":",$_SESSION['language']);
$_SESSION['header'] = "<?xml version=\"1.0\" encoding=\"" . $current_language[1] . "\"?>\n";
$_SESSION['header'] .= "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n\n";
$_SESSION['header'] .= "<html>\n<head>\n";
$_SESSION['header'] .= "<meta http-equiv=\"content-type\" content=\"text/html; charset=" . $current_language[1] . "\">\n";
$_SESSION['header'] .= "<meta http-equiv=\"pragma\" content=\"no-cache\">\n <meta http-equiv=\"cache-control\" content=\"no-cache\">";
// set security settings for session
$_SESSION['sec_session_id'] = session_id();
$_SESSION['sec_client_ip'] = $_SERVER['REMOTE_ADDR'];
$_SESSION['sec_sessionTime'] = time();
// logging
logNewMessage(LOG_NOTICE, 'User ' . $_POST['username'] . ' successfully logged in.');
// Load main frame
metaRefresh("./main.php");
die();
}
else
{
if ($result === False) {
$error_message = _("Cannot connect to specified LDAP server. Please try again.");
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
display_LoginPage($_SESSION['config']); // connection failed
}
elseif ($result == 81) {
$error_message = _("Cannot connect to specified LDAP server. Please try again.");
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
display_LoginPage($_SESSION['config']); // connection failed
}
elseif ($result == 49) {
$error_message = _("Wrong password/user name combination. Please try again.");
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (wrong password).');
display_LoginPage($_SESSION['config']); // Username/password invalid. Return to login page.
}
else {
$error_message = _("LDAP error, server says:") . "\n<br>($result) " . ldap_err2str($result);
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
display_LoginPage($_SESSION['config']); // other errors
}
}
}
}
// Reload loginpage after a profile change
elseif(!empty($_POST['profileChange'])) {
$_SESSION['config'] = new LAMConfig($_POST['profile']); // Recreate the config object with the submited
display_LoginPage($_SESSION['config']); // Load login page
}
// Load login page
else
{
$_SESSION['loggedIn'] = false;
$default_Config = new LAMCfgMain();
$default_Profile = $default_Config->default;
$_SESSION["config"] = new LAMConfig($default_Profile); // Create new Config object
$_SESSION["cfgMain"] = $default_Config; // Create new CfgMain object
display_LoginPage($_SESSION["config"]); // Load Login page
}
?>
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