<?php
	/**************************************************************************\
	* phpGroupWare                                                             *
	* http://www.phpgroupware.org                                              *
	* Written by Dan Kuykendall <seek3r@phpgroupware.org>                      *
	*            Joseph Engo    <jengo@phpgroupware.org>                       *
	* --------------------------------------------                             *
	*  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.                                              *
	\**************************************************************************/

	/* $Id: login.php,v 1.1.1.4 2004/04/06 23:40:22 kazuyan Exp $ */

	$phpgw_info = array();
	$GLOBALS['phpgw_info']['flags'] = array(
		'disable_template_class' => True,
		'login'                  => True,
		'currentapp'             => 'login',
		'noheader'               => True
	);
	if(file_exists('./header.inc.php'))
	{
		include('./header.inc.php');
		$GLOBALS['phpgw']->sessions = createObject('phpgwapi.sessions');
	}
	else
	{
		Header('Location: setup/index.php');
		exit;
	}

	$GLOBALS['phpgw_info']['server']['template_dir'] = PHPGW_SERVER_ROOT . '/phpgwapi/templates/' . $GLOBALS['phpgw_info']['login_template_set'];
	$tmpl = CreateObject('phpgwapi.Template', $GLOBALS['phpgw_info']['server']['template_dir']);

	// This is used for system downtime, to prevent new logins.
	if ($GLOBALS['phpgw_info']['server']['deny_all_logins'])
	{
		$tmpl->set_file(array(
			'login_form'  => 'login_denylogin.tpl'
		));
		$tmpl->set_var('template_set','default');
		$tmpl->pfp('loginout','login_form');
		exit;
	}

	// !! NOTE !!
	// Do NOT and I repeat, do NOT touch ANYTHING to do with lang in this file.
	// If there is a problem, tell me and I will fix it. (jengo)

/*
	if ($_GET['cd'] != 10 && $GLOBALS['phpgw_info']['server']['usecookies'] == False)
	{
		$GLOBALS['phpgw']->sessions->setcookie('sessionid');
		$GLOBALS['phpgw']->sessions->setcookie('kp3');
		$GLOBALS['phpgw']->sessions->setcookie('domain');
	}
*/

/* This is not working yet because I need to figure out a way to clear the $cd =1
	if (isset($_SERVER['PHP_AUTH_USER']) && $_GET['cd'] == '1')
	{
		Header('HTTP/1.0 401 Unauthorized');
		Header('WWW-Authenticate: Basic realm="phpGroupWare"'); 
		echo 'You have to re-authentificate yourself'; 
		exit;
	}
*/

	if (! $deny_login && ! $GLOBALS['phpgw_info']['server']['show_domain_selectbox'])
	{
		$tmpl->set_file(array('login_form'  => 'login.tpl'));
		$tmpl->set_var('charset',lang('charset'));
	}
	elseif ($GLOBALS['phpgw_info']['server']['show_domain_selectbox'])
	{
		$tmpl->set_file(array('login_form'  => 'login_selectdomain.tpl'));
		$tmpl->set_var('charset',lang('charset'));
	}
	
	if(@$GLOBALS['phpgw_info']['server']['domain_from_host'] 
		&& !@$GLOBALS['phpgw_info']['server']['show_domain_selectbox'])
	{
		$tmpl->set_var('logindomain', '@' . $_SERVER['SERVER_NAME'] 
			. '<input type="hidden" name="logindomain" value="'
			. $_SERVER['SERVER_NAME'] . '">');
	}
	

	function check_logoutcode($code)
	{
		switch($code)
		{
			case 1:
				return lang('You have been successfully logged out');
				break;
			case 2:
				return lang('Sorry, your login has expired');
				break;
			case 5:
				return '<font color="FF0000">' . lang('Bad login or password') . '</font>';
				break;
			case 99:
				return '<font color="FF0000">' . lang('Blocked, too many attempts') . '</font>';
				break;
			case 10:
				$GLOBALS['phpgw']->sessions->phpgw_setcookie('sessionid');
				$GLOBALS['phpgw']->sessions->phpgw_setcookie('kp3');
				$GLOBALS['phpgw']->sessions->phpgw_setcookie('domain');

				//fix for bug php4 expired sessions bug
				if($GLOBALS['phpgw_info']['server']['sessions_type'] == 'php4')
				{
					$GLOBALS['phpgw']->sessions->phpgw_setcookie(PHPGW_PHPSESSID);
				}

				return '<font color=#FF0000>' . lang('Your session could not be verified.') . '</font>';
				break;
			default:
				return '&nbsp;';
		}
	}
	
	function check_langs()
	{
		//echo "<h1>check_langs()</h1>\n";
		if ($GLOBALS['phpgw_info']['server']['lang_ctimes'] && !is_array($GLOBALS['phpgw_info']['server']['lang_ctimes']))
		{
			$GLOBALS['phpgw_info']['server']['lang_ctimes'] = unserialize($GLOBALS['phpgw_info']['server']['lang_ctimes']);
		}
		//_debug_array($GLOBALS['phpgw_info']['server']['lang_ctimes']);
		
		$lang = $GLOBALS['phpgw_info']['user']['preferences']['common']['lang'];
		$apps = $GLOBALS['phpgw_info']['user']['apps'];
		$apps['phpgwapi'] = true;	// check the api too
		while (list($app,$data) = each($apps))
		{
			$fname = PHPGW_SERVER_ROOT . "/$app/setup/phpgw_$lang.lang";
			
			if (file_exists($fname))
			{
				$ctime = filectime($fname);
				$ltime = intval($GLOBALS['phpgw_info']['server']['lang_ctimes'][$lang][$app]);
				//echo "checking lang='$lang', app='$app', ctime='$ctime', ltime='$ltime'<br>\n";
				
				if ($ctime != $ltime)
				{
					update_langs();		// update all langs
					break;
				}
			}
		}
	}
	
	function update_langs()
	{
		$GLOBALS['phpgw_setup'] = CreateObject('phpgwapi.setup');
		$GLOBALS['phpgw_setup']->db = $GLOBALS['phpgw']->db;
		
		$GLOBALS['phpgw_setup']->detection->check_lang(false);	// get installed langs
		$langs = $GLOBALS['phpgw_info']['setup']['installed_langs'];
		while (list($lang) = @each($langs))
		{
			$langs[$lang] = $lang;
		}
		$_POST['submit'] = true;
		$_POST['lang_selected'] = $langs;
		$_POST['upgrademethod'] = 'dumpold';
		$included = 'from_login';
		
		include(PHPGW_SERVER_ROOT . '/setup/lang.php');
	}

	/* Program starts here */
  
	if ($GLOBALS['phpgw_info']['server']['auth_type'] == 'http' && isset($_SERVER['PHP_AUTH_USER']))
	{
		$submit = True;
		$login  = $_SERVER['PHP_AUTH_USER'];
		$passwd = $_SERVER['PHP_AUTH_PW'];
	}

	# Apache + mod_ssl style SSL certificate authentication
	# Certificate (chain) verification occurs inside mod_ssl
	if ($GLOBALS['phpgw_info']['server']['auth_type'] == 'sqlssl' && isset($_SERVER['SSL_CLIENT_S_DN']) && !isset($_GET['cd']))
	{
		# an X.509 subject looks like:
		# /CN=john.doe/OU=Department/O=Company/C=xx/Email=john@comapy.tld/L=City/
		# the username is deliberately lowercase, to ease LDAP integration
		$sslattribs = explode('/',$_SERVER['SSL_CLIENT_S_DN']);
		# skip the part in front of the first '/' (nothing)
		while ($sslattrib = next($sslattribs))
		{
			list($key,$val) = explode('=',$sslattrib);
			$sslattributes[$key] = $val;
		}

		if (isset($sslattributes['Email']))
		{
			$submit = True;

			# login will be set here if the user logged out and uses a different username with
			# the same SSL-certificate.
			if (!isset($_POST['login'])&&isset($sslattributes['Email'])) {
				$login = $sslattributes['Email'];
				# not checked against the database, but delivered to authentication module
				$passwd = $_SERVER['SSL_CLIENT_S_DN'];
			}
		}
		unset($key);
		unset($val);
		unset($sslattributes);
	}

	if (isset($_POST['passwd_type']) || $_POST['submit_x'] || $_POST['submit_y'] || $submit)
//		 isset($_POST['passwd']) && $_POST['passwd']) // enable konqueror to login via Return
	{
		if (getenv(REQUEST_METHOD) != 'POST' && $_SERVER['REQUEST_METHOD'] != 'POST'
			&& !isset($_SERVER['PHP_AUTH_USER']) && !isset($_SERVER['SSL_CLIENT_S_DN']))
		{
			$GLOBALS['phpgw']->redirect($GLOBALS['phpgw']->link('/login.php','code=5'));
		}
		$login = $_POST['login'];
		if (strstr($login,'@') === False && isset($_POST['logindomain']))
		{
			$login .= '@' . $_POST['logindomain'];
		}
		$GLOBALS['sessionid'] = $GLOBALS['phpgw']->session->create($login,$_POST['passwd'],$_POST['passwd_type']);

		if (! isset($GLOBALS['sessionid']) || ! $GLOBALS['sessionid'])
		{
			$GLOBALS['phpgw']->redirect($GLOBALS['phpgw_info']['server']['webserver_url'] . '/login.php?cd=' . $GLOBALS['phpgw']->session->cd_reason);
		}
		else
		{
			$forward = get_var('phpgw_forward', array('GET', 'POST'), 0);
			if($forward)
			{
				$extra_vars['phpgw_forward'] =  $forward;
				foreach($_GET as $name => $value)
				{
					if (ereg('phpgw_',$name))
					{
						$extra_vars[$name] = $value;
					}
				}
			}
			if (!$GLOBALS['phpgw_info']['server']['disable_autoload_langfiles'])
			{
				check_langs();
			}
			$extra_vars['cd'] = 'yes';
			
			$GLOBALS['phpgw']->hooks->process('login');
			$GLOBALS['phpgw']->redirect_link('/home.php', $extra_vars);
		}
	}
	else
	{
		// !!! DONT CHANGE THESE LINES !!!
		// If there is something wrong with this code TELL ME!
		// Commenting out the code will not fix it. (jengo)
		if (isset($_COOKIE['last_loginid']))
		{
			$accounts = CreateObject('phpgwapi.accounts');
			$prefs = CreateObject('phpgwapi.preferences', $accounts->name2id($_COOKIE['last_loginid']));

			if (! $prefs->account_id)
			{
				$GLOBALS['phpgw_info']['user']['preferences']['common']['lang'] = 'en';
			}
			else
			{
				$GLOBALS['phpgw_info']['user']['preferences'] = $prefs->read_repository();
			}
			#print 'LANG:' . $GLOBALS['phpgw_info']['user']['preferences']['common']['lang'] . '<br>';
		}
		else
		{
			// If the lastloginid cookies isn't set, we will default to english.
			// Change this if you need.
			$GLOBALS['phpgw_info']['user']['preferences']['common']['lang'] = 'en';
		}
		$GLOBALS['phpgw']->translation->add_app('login');
		$GLOBALS['phpgw']->translation->add_app('loginscreen');
		if (lang('loginscreen_message') != 'loginscreen_message*')
		{
			$tmpl->set_var('lang_message',stripslashes(lang('loginscreen_message')));
		}
	}

	$last_loginid = $_COOKIE['last_loginid'];
	if ($GLOBALS['phpgw_info']['server']['show_domain_selectbox'])
	{
		$domain_select = '';      // For security ... just in case
		foreach($GLOBALS['phpgw_domain'] as $domain_name => $domain_vars)
		{	
			$domain_select .= '<option value="' . $domain_name . '"';

			if ($domain_name == $_COOKIE['last_domain'])
			{
				$domain_select .= ' selected';
			}
			$domain_select .= '>' . $domain_name . '</option>';
		}
		$tmpl->set_var('select_domain',$domain_select);
	}
	elseif ($last_loginid !== '')
	{
		reset($GLOBALS['phpgw_domain']);
		list($default_domain) = each($GLOBALS['phpgw_domain']);

		if ($_COOKIE['last_domain'] != $default_domain && !empty($_COOKIE['last_domain']))
		{
			$last_loginid .= '@' . $_COOKIE['last_domain'];
		}
	}

	foreach($_GET as $name => $value)
	{
		if (ereg('phpgw_',$name))
		{
			$extra_vars .= '&' . $name . '=' . urlencode($value);
		}
	}

	if ($extra_vars)
	{
		$extra_vars = '?' . substr($extra_vars,1,strlen($extra_vars));
	}

	$tmpl->set_var('login_url', $GLOBALS['phpgw_info']['server']['webserver_url'] . '/login.php' . $extra_vars);
	$tmpl->set_var('registration_url',$GLOBALS['phpgw_info']['server']['webserver_url'] . '/registration/');
	$tmpl->set_var('version',$GLOBALS['phpgw_info']['server']['versions']['phpgwapi']);
	$tmpl->set_var('cd',check_logoutcode($_GET['cd']));
	$tmpl->set_var('cookie',$last_loginid);

	$tmpl->set_var('lang_username',lang('username'));
	$tmpl->set_var('lang_password',lang('password'));
	$tmpl->set_var('lang_login',lang('login'));

	$tmpl->set_var('website_title', $GLOBALS['phpgw_info']['server']['site_title']);
	$tmpl->set_var('template_set',$GLOBALS['phpgw_info']['login_template_set']);
	$tmpl->set_var('bg_color',($GLOBALS['phpgw_info']['server']['login_bg_color']?$GLOBALS['phpgw_info']['server']['login_bg_color']:'FFFFFF'));
	$tmpl->set_var('bg_color_title',($GLOBALS['phpgw_info']['server']['login_bg_color_title']?$GLOBALS['phpgw_info']['server']['login_bg_color_title']:'486591'));
	$tmpl->set_var('logo_url',($GLOBALS['phpgw_info']['server']['login_logo_url']?$GLOBALS['phpgw_info']['server']['login_logo_url']:'www.phpgroupware.org'));
	$tmpl->set_var('logo_file',($GLOBALS['phpgw_info']['server']['login_logo_file']?$GLOBALS['phpgw_info']['server']['login_logo_file']:'logo.gif'));
	$tmpl->set_var('logo_title',($GLOBALS['phpgw_info']['server']['login_logo_title']?$GLOBALS['phpgw_info']['server']['login_logo_title']:'phpGroupWare --&gt; home'));
	$tmpl->set_var('autocomplete', ($GLOBALS['phpgw_info']['server']['autocomplete_login'] ? 'autocomplete="off"' : ''));

	$tmpl->pfp('loginout','login_form');
?>
