553 lines
20 KiB
PHP
553 lines
20 KiB
PHP
<?php
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/*
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$Id$
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This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
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Copyright (C) 2003 - 2006 Michael Duergner
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* Login form of LDAP Account Manager.
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*
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* @author Michael Duergner
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* @package main
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*/
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/** status messages */
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include_once("../lib/status.inc");
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// check if PHP >= 5.1
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if (version_compare(phpversion(), '5.1.0') < 0) {
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echo "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n\n";
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echo "<html>\n<head>\n";
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echo "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\">\n";
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echo "<meta http-equiv=\"pragma\" content=\"no-cache\">\n <meta http-equiv=\"cache-control\" content=\"no-cache\">\n";
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echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../style/layout.css\">\n";
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echo "<link rel=\"shortcut icon\" type=\"image/x-icon\" href=\"../graphics/favicon.ico\">\n";
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echo "<title>LDAP Account Manager</title>\n";
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echo "</head><body>\n";
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StatusMessage("ERROR", "LAM needs PHP 5 greater or equal as 5.1.0!", "Please upgrade your PHP installation.");
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echo "<br><br>";
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echo "</body></html>";
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exit();
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}
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/** security functions */
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include_once("../lib/security.inc");
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/** self service functions */
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include_once("../lib/selfService.inc");
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// check environment
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$criticalErrors = array();
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// check if PHP has session support
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if (! function_exists('session_start')) {
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$criticalErrors[] = array("ERROR", "Your PHP has no session support!", "Please install the session extension for PHP.");
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}
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// check if PHP has LDAP support
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if (! function_exists('ldap_search')) {
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$criticalErrors[] = array("ERROR", "Your PHP has no LDAP support!", "Please install the LDAP extension for PHP.");
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}
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// check if PHP has gettext support
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if (! function_exists('gettext') || !function_exists('_')) {
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$criticalErrors[] = array("ERROR", "Your PHP has no gettext support!", "Please install gettext for PHP.");
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}
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// check if PHP has XML support
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if (! function_exists('utf8_decode')) {
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$criticalErrors[] = array("ERROR", "Your PHP has no XML support!", "Please install the XML extension for PHP.");
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}
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// check file permissions
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$writableDirs = array('sess', 'tmp');
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for ($i = 0; $i < sizeof($writableDirs); $i++) {
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$path = realpath('../') . "/" . $writableDirs[$i];
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if (!is_writable($path)) {
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$criticalErrors[] = array("ERROR", 'The directory %s is not writable for the web server. Please change your file permissions.', '', array($path));
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}
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}
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// check session auto start
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if (ini_get("session.auto_start") == "1") {
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$criticalErrors[] = array("ERROR", "Please deactivate session.auto_start in your php.ini. LAM will not work if it is activated.");
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}
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$memLimit = ini_get('memory_limit');
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if (isset($memLimit) && ($memLimit != '') && (substr(strtoupper($memLimit), strlen($memLimit) - 1) == 'M')) {
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if (intval(substr($memLimit, 0, strlen($memLimit) - 1)) < 64) {
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$criticalErrors[] = array("ERROR", "Please increase the \"memory_limit\" parameter in your php.ini to at least \"64M\".",
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"Your current memory limit is $memLimit.");
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}
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}
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// stop login if critical errors occured
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if (sizeof($criticalErrors) > 0) {
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echo "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n\n";
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echo "<html>\n<head>\n";
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echo "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\">\n";
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echo "<meta http-equiv=\"pragma\" content=\"no-cache\">\n <meta http-equiv=\"cache-control\" content=\"no-cache\">\n";
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echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../style/layout.css\">\n";
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echo "<link rel=\"shortcut icon\" type=\"image/x-icon\" href=\"../graphics/favicon.ico\">\n";
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echo "<title>LDAP Account Manager</title>\n";
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echo "</head><body>\n";
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for ($i = 0; $i < sizeof($criticalErrors); $i++) {
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call_user_func_array("StatusMessage", $criticalErrors[$i]);
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echo "<br><br>";
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}
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echo "</body></html>";
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exit();
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}
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/** access to configuration options */
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include_once("../lib/config.inc"); // Include config.inc which provides Config class
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// set session save path
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if (strtolower(session_module_name()) == 'files') {
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session_save_path("../sess");
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}
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session_start(); // Start LDAP Account Manager session
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// save last selected login profile
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if(isset($_POST['profile'])) {
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setcookie("lam_default_profile", $_POST['profile'], time() + 365*60*60*24);
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}
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/**
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* Displays the login window.
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*
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* @param object $config_object current active configuration
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*/
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function display_LoginPage($config_object) {
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global $error_message;
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// generate 256 bit key and initialization vector for user/passwd-encryption
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// check if we can use /dev/random otherwise use /dev/urandom or rand()
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if(function_exists('mcrypt_create_iv')) {
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$key = @mcrypt_create_iv(32, MCRYPT_DEV_URANDOM);
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if (! $key) {
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srand((double)microtime()*1234567);
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$key = mcrypt_create_iv(32, MCRYPT_RAND);
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}
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$iv = @mcrypt_create_iv(32, MCRYPT_DEV_URANDOM);
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if (! $iv) {
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srand((double)microtime()*1234567);
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$iv = mcrypt_create_iv(32, MCRYPT_RAND);
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}
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// save both in cookie
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setcookie("Key", base64_encode($key), 0, "/");
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setcookie("IV", base64_encode($iv), 0, "/");
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}
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$_SESSION['language'] = $config_object->get_defaultLanguage();
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$current_language = explode(":",$_SESSION['language']);
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$_SESSION['header'] = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n\n";
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$_SESSION['header'] .= "<html>\n<head>\n";
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$_SESSION['header'] .= "<meta http-equiv=\"content-type\" content=\"text/html; charset=" . $current_language[1] . "\">\n";
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$_SESSION['header'] .= "<meta http-equiv=\"pragma\" content=\"no-cache\">\n <meta http-equiv=\"cache-control\" content=\"no-cache\">";
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// loading available languages from language.conf file
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$languagefile = "../config/language";
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if(is_file($languagefile) == True)
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{
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$file = fopen($languagefile, "r");
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$i = 0;
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while(!feof($file))
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{
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$line = fgets($file, 1024);
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if($line == "" || $line == "\n" || $line[0] == "#") continue; // ignore comment and empty lines
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$value = explode(":", $line);
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$languages[$i]["link"] = $value[0] . ":" . $value[1];
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$languages[$i]["descr"] = $value[2];
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if(rtrim($line) == $_SESSION["language"])
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{
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$languages[$i]["default"] = "YES";
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}
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else
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{
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$languages[$i]["default"] = "NO";
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}
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$i++;
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}
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fclose($file);
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}
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$profiles = getConfigProfiles();
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setlanguage(); // setting correct language
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echo $_SESSION["header"];
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?>
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<title>LDAP Account Manager -Login-</title>
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<link rel="stylesheet" type="text/css" href="../style/layout.css">
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<link rel="shortcut icon" type="image/x-icon" href="../graphics/favicon.ico">
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</head>
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<body onload="focusLogin()">
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<?php
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// set focus on password field
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echo "<script type=\"text/javascript\" language=\"javascript\">\n";
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echo "<!--\n";
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echo "function focusLogin() {\n";
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if ($config_object->getLoginMethod() == LAMConfig::LOGIN_LIST) {
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echo "myElement = document.getElementsByName('passwd')[0];\n";
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echo "myElement.focus();\n";
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}
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else {
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echo "myElement = document.getElementsByName('username')[0];\n";
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echo "myElement.focus();\n";
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}
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echo "}\n";
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echo "//-->\n";
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echo "</script>\n";
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?>
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<p align="center">
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<a href="http://www.ldap-account-manager.org/" target="_blank"><img src="../graphics/banner.jpg" border="1" alt="LDAP Account Manager"></a>
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</p>
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<table width="100%" border="0">
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<tr>
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<td width="50%" align="left">
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<a href="./config/index.php"><IMG alt="configuration" src="../graphics/tools.png"> <?php echo _("LAM configuration") ?></a>
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</td>
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<TD width="50%" align="right">
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<?PHP
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if (!isLAMProVersion()) {
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echo "<a href=\"http://www.ldap-account-manager.org/lamcms/lamPro\">" . _("Want more features? Get LAM Pro!") . "</a>";
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}
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?>
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</TD>
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</tr>
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</table>
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<hr><br><br>
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<?php
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// check extensions
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$extList = getRequiredExtensions();
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for ($i = 0; $i < sizeof($extList); $i++) {
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if (!extension_loaded($extList[$i])) {
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StatusMessage("ERROR", "A required PHP extension is missing!", $extList[$i]);
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echo "<br>";
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}
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}
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// check TLS
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$useTLS = $config_object->getUseTLS();
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if (isset($useTLS) && ($useTLS == "yes")) {
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if (!function_exists('ldap_start_tls')) {
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StatusMessage("ERROR", "Your PHP installation does not support TLS encryption!");
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echo "<br>";
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}
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}
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// check if session expired
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if (isset($_GET['expired'])) {
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StatusMessage("ERROR", _("Your session expired, please log in again."));
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echo "<br>";
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}
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?>
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<div style="position:relative; z-index:5;">
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<table width="650" align="center" border="2" rules="none" bgcolor="white">
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<tr>
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<td style="border-style:none" width="70" rowspan="2">
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<img src="../graphics/lam.png" alt="Logo">
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</td>
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<td style="border-style:none" width="580">
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<form action="login.php" method="post">
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<table width="580">
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<tr>
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<td style="border-style:none" height="70" colspan="2" align="center">
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<font color="#000080"><b><big><?php echo _("Please select your user name and enter your password to log in."); ?></big></b></font>
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</td>
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</tr>
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<tr>
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<td style="border-style:none" height="35" align="right"><b>
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<?php
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echo _("User name") . ":";
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?>
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</b> </td>
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<td style="border-style:none" height="35" align="left">
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<?php
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if ($config_object->getLoginMethod() == LAMConfig::LOGIN_LIST) {
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echo '<select name="username" size="1" tabindex="0">';
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$admins = $config_object->get_Admins();
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for($i = 0; $i < count($admins); $i++) {
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$text = explode(",", $admins[$i]);
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$text = explode("=", $text[0]);
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echo '<option value="' . $admins[$i] . '">' . $text[1] . '</option>';
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}
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echo '</select>';
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}
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else {
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echo '<input type="text" name="username" tabindex="1">';
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}
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?>
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</td>
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</tr>
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<tr>
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<td style="border-style:none" height="35" align="right"><b>
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<?php
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echo _("Password") . ":";
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?>
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</b> </td>
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<td style="border-style:none" height="35" align="left">
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<input type="password" name="passwd" tabindex="2">
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</td>
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</tr>
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<tr>
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<td style="border-style:none" align="right"><b>
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<?php
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echo _("Language") . ":";
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?>
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</b> </td>
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<td style="border-style:none" height="35" align="left">
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<select name="language" size="1" tabindex="3">
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<?php
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for($i = 0; $i < count($languages); $i++) {
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if($languages[$i]["default"] == "YES") {
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?>
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<option selected value="<?php echo $languages[$i]["link"] . ":" . $languages[$i]["descr"]; ?>"><?php echo $languages[$i]["descr"]; ?></option>
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<?php
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}
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else
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{
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?>
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<option value="<?php echo $languages[$i]["link"] . ":" . $languages[$i]["descr"]; ?>"><?php echo $languages[$i]["descr"]; ?></option>
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<?php
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}
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}
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?>
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</select>
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</td>
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</tr>
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<tr>
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<td style="border-style:none" height="50" colspan="2" align="center">
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<input name="checklogin" type="hidden" value="checklogin">
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<input name="submit" type="submit" value="<?php echo _("Login"); ?>" tabindex="4">
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</td>
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</tr>
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<tr>
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<td style="border-style:none" colspan="2" align="center">
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<?php
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if($error_message != "") {
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echo "<font color=\"red\"><b>" . $error_message . "</b></font>";
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}
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?>
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</td>
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</tr>
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</table>
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</form>
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</td>
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</tr>
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<tr>
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<td style="border-style:none">
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<form action="login.php" method="post">
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<table width="580">
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<tr>
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<td style="border-style:none" height="30" colspan="2">
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<hr>
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<b>
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<?php
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echo _("LDAP server") . ": ";
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?></b>
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<?php echo $config_object->get_ServerURL(); ?>
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</td>
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</tr>
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<tr>
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<td style="border-style:none" height="30"><b>
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<?php
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echo _("Server profile") . ": ";
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if(empty($_POST['profileChange'])) {
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$_POST['profile'] = $_SESSION['config']->getName();
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}
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?></b>
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<?php echo $_POST['profile']; ?>
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</td>
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<td style="border-style:none" height="30" align="right">
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<select name="profile" size="1" tabindex="5">
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<?php
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for($i=0;$i<count($profiles);$i++) {
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?>
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<option value="<?php echo $profiles[$i]; ?>"><?php echo $profiles[$i]; ?></option>
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<?php
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}
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?>
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</select>
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<input name="profileChange" type="hidden" value="profileChange">
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<input name="submit" type="submit" value="<?php echo _("Change profile"); ?>" tabindex="6">
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</td>
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</tr>
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<tr>
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<td style="border-style:none" height="10" colspan="2"></td>
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</tr>
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</table>
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</form>
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</td>
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</tr>
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</table>
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</div>
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<br><br>
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<TABLE style="position:absolute; bottom:10px;" border="0" width="99%">
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<TR><TD align="right"><HR>
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<SMALL>
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<?php
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if (isLAMProVersion()) {
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echo "LDAP Account Manager <b>Pro</b>: <b>" . LAMVersion() . "</b> ";
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}
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else {
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echo "LDAP Account Manager: <b>" . LAMVersion() . "</b> ";
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}
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?>
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</SMALL>
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</TD></TR>
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</TABLE>
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</body>
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</html>
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<?php
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}
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// checking if the submitted username/password is correct.
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if(!empty($_POST['checklogin'])) {
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$_SESSION['lampath'] = realpath('../') . "/"; // Save full path to lam in session
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include_once("../lib/ldap.inc"); // Include ldap.php which provides Ldap class
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$_SESSION['ldap'] = new Ldap($_SESSION['config']); // Create new Ldap object
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if($_POST['passwd'] == "") {
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$error_message = _("Empty password submitted. Please try again.");
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display_LoginPage($_SESSION['config']); // Empty password submitted. Return to login page.
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}
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else {
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$clientSource = $_SERVER['REMOTE_ADDR'] . '/' . $_SERVER['REMOTE_HOST'];
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if (get_magic_quotes_gpc() == 1) {
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$_POST['passwd'] = stripslashes($_POST['passwd']);
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}
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$username = $_POST['username'];
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// search user in LDAP if needed
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if ($_SESSION['config']->getLoginMethod() == LAMConfig::LOGIN_SEARCH) {
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$searchFilter = $_SESSION['config']->getLoginSearchFilter();
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$searchFilter = str_replace('%USER%', $username ,$searchFilter);
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$searchSuccess = true;
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$searchError = '';
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$searchLDAP = new Ldap($_SESSION['config']);
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$searchLDAPResult = $searchLDAP->connect('', '', true);
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if (! ($searchLDAPResult == 0)) {
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$searchSuccess = false;
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$searchError = _('Cannot connect to specified LDAP server. Please try again.') . ' ' . @ldap_error($searchLDAP->server());
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}
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else {
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$searchResult = @ldap_search($searchLDAP->server(), $_SESSION['config']->getLoginSearchSuffix(), $searchFilter, array('dn'), 0, 0, 0, LDAP_DEREF_NEVER);
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if ($searchResult) {
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$searchInfo = @ldap_get_entries($searchLDAP->server(), $searchResult);
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if ($searchInfo) {
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$searchInfo = cleanLDAPResult($searchInfo);
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if (sizeof($searchInfo) == 0) {
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$searchSuccess = false;
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$searchError = _('Wrong password/user name combination. Please try again.');
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}
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elseif (sizeof($searchInfo) > 1) {
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$searchSuccess = false;
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$searchError = _('The given user name matches multiple LDAP entries.');
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}
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else {
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$username = $searchInfo[0]['dn'];
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}
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}
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else {
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$searchSuccess = false;
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$searchError = _('Unable to find the user name in LDAP.');
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|
if (ldap_errno($searchLDAP->server()) != 0) $searchError .= ' ' . ldap_error($searchLDAP->server());
|
|
}
|
|
}
|
|
else {
|
|
$searchSuccess = false;
|
|
$searchError = _('Unable to find the user name in LDAP.');
|
|
if (ldap_errno($searchLDAP->server()) != 0) $searchError .= ' ' . ldap_error($searchLDAP->server());
|
|
}
|
|
}
|
|
if (!$searchSuccess) {
|
|
$error_message = $searchError;
|
|
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' (' . $clientSource . ') failed to log in. ' . $searchError . '');
|
|
$searchLDAP->close();
|
|
display_LoginPage($_SESSION['config']);
|
|
exit();
|
|
}
|
|
$searchLDAP->close();
|
|
}
|
|
// try to connect to LDAP
|
|
$result = $_SESSION['ldap']->connect($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'] = "<!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'] . ' (' . $clientSource . ') successfully logged in.');
|
|
// Load main frame
|
|
metaRefresh("./main.php");
|
|
die();
|
|
}
|
|
else {
|
|
if ($result === False) {
|
|
// connection failed
|
|
$error_message = _("Cannot connect to specified LDAP server. Please try again.");
|
|
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' (' . $clientSource . ') failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
|
|
display_LoginPage($_SESSION['config']);
|
|
exit();
|
|
}
|
|
elseif ($result == 81) {
|
|
// connection failed
|
|
$error_message = _("Cannot connect to specified LDAP server. Please try again.");
|
|
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' (' . $clientSource . ') failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
|
|
display_LoginPage($_SESSION['config']);
|
|
exit();
|
|
}
|
|
elseif ($result == 49) {
|
|
// user name/password invalid. Return to login page.
|
|
$error_message = _("Wrong password/user name combination. Please try again.");
|
|
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' (' . $clientSource . ') failed to log in (wrong password).');
|
|
display_LoginPage($_SESSION['config']);
|
|
exit();
|
|
}
|
|
else {
|
|
// other errors
|
|
$error_message = _("LDAP error, server says:") . "\n<br>($result) " . ldap_err2str($result);
|
|
logNewMessage(LOG_ERR, 'User ' . $_POST['username'] . ' (' . $clientSource . ') failed to log in (LDAP error: ' . ldap_err2str($result) . ').');
|
|
display_LoginPage($_SESSION['config']);
|
|
exit();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Reload loginpage after a profile change
|
|
elseif(!empty($_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 {
|
|
$default_Config = new LAMCfgMain();
|
|
$default_Profile = $default_Config->default;
|
|
if(isset($_COOKIE["lam_default_profile"])) {
|
|
$default_Profile = $_COOKIE["lam_default_profile"];
|
|
}
|
|
$_SESSION["config"] = new LAMConfig($default_Profile); // Create new Config object
|
|
$_SESSION["cfgMain"] = $default_Config; // Create new CfgMain object
|
|
|
|
display_LoginPage($_SESSION["config"]); // Load Login page
|
|
}
|
|
?>
|