<?php
/*
login.php
Copyright 2010  Florian SCHMITT
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

// Lecture des parametres de l'action

// url d'inscription
$signupurl = $this->GetParameter('signupurl');
// si pas de pas d'url d'inscription renseignée, on utilise ParametresUtilisateur
if (empty($signupurl) && $signupurl != "0") {
	$signupurl = $this->href("", "ParametresUtilisateur", "");
} 
else {
	if ($this->IsWikiName($signupurl)) {
		$signupurl = $this->href('', $signupurl);
	}
}

// url du profil
$profileurl = $this->GetParameter('profileurl');

$incomingurl = 'http'.((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off'
    || $_SERVER['SERVER_PORT'] == 443) ? 's' : '').'://'.
		(($_SERVER['SERVER_PORT']!='80') ? $_SERVER['HTTP_HOST'].':'.$_SERVER['SERVER_PORT'].$_SERVER['SCRIPT_NAME'] : 
		$_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME']).
		(($_SERVER['QUERY_STRING']>' ') ? '?'.$_SERVER['QUERY_STRING'] : '');

$userpage = $this->GetParameter("userpage");

// si pas d'url de page de sortie renseignée, on retourne sur la page courante
if (empty($userpage)) {
	$userpage = $incomingurl;
		
	// si l'url de sortie contient le passage de parametres de déconnexion, on l'efface
	if (isset($_REQUEST["action"]) && $_REQUEST["action"] == "logout") {
		$userpage = str_replace('&action=logout', '', $userpage);
	}
} 
else {
	if ($this->IsWikiName($userpage)) {
		$userpage = $this->href('', $userpage);
	}
}

// classes css pour l'action et pour les boutons
$class = $this->GetParameter("class");
$btnclass = $this->GetParameter("btnclass");

// template par défaut
$template = $this->GetParameter("template");
if (empty($template) || !file_exists('tools/login/presentation/templates/'.$template) ) {
	$template = "default.tpl.html";
}

$error = '';
$PageMenuUser = '';

// on initialise la valeur vide si elle n'existe pas
if (!isset($_REQUEST["action"])) $_REQUEST["action"] = '';

// cas de la déconnexion
if ($_REQUEST["action"] == "logout") {
	$this->LogoutUser();

	if($this->config['use_sso']) {
		require_once('tools/login/libs/identificationsso.class.php');
		$sso = new identificationSso($this);
		$sso->deconnecterUtilisateur(str_replace('&action=logout', '', $incomingurl));
	}

	$this->SetMessage("Vous &ecirc;tes maintenant d&eacute;connect&eacute; !");
	$this->Redirect(str_replace('&action=logout', '', str_replace('&action=logout', '', $incomingurl)));
	exit;
}

// cas de l'identification
if ($_REQUEST["action"] == "login") {	

	// login sso 
	if($this->config['use_sso']) {
		// identification.php analyse les cookies, header etc... afin de déterminer la présence d'un jeton
		require_once('tools/login/libs/identificationsso.class.php');
		$sso = new identificationSso($this);
		$sso->connecterUtilisateur($_POST["name"], $_POST["password"], $_POST['incomingurl']);
	} else {
	// login normal
		// si l'utilisateur existe, on vérifie son mot de passe
		if (isset($_POST["name"]) && $existingUser = $this->LoadUser($_POST["name"])) {
			// si le mot de passe est bon, on créée le cookie et on redirige sur la bonne page
			if ($existingUser["password"] == md5($_POST["password"])) {
				$this->SetUser($existingUser, $_POST["remember"]);
				// si l'on veut utiliser la page d'accueil correspondant au nom d'utilisateur
				if ( $userpage=='user' && $this->LoadPage($_POST["name"]) ) {
					$this->Redirect($this->href('', $_POST["name"], ''));
				}
				// on va sur la page d'ou on s'est identifie sinon
				else {
					$this->Redirect($_POST['incomingurl']);
				}			
			}
			// on affiche une erreur sur le mot de passe sinon
			else {
				$this->SetMessage("Identification impossible : mauvais mot de passe.");
				$this->Redirect($_POST['incomingurl']);
			}
		}
		// on affiche une erreur sur le NomWiki sinon
		else {
			$this->SetMessage("Identification impossible : NomWiki non reconnu.");
			$this->Redirect($_POST['incomingurl']);
		}
	}
}

if($this->config['use_sso']) {
	require_once('tools/login/libs/identificationsso.class.php');
	$sso = new identificationSso($this);
	$sso->recupererIdentiteConnectee();
}

// cas d'une personne connectée déjà
if ($user = $this->GetUser()) {
	$connected = true;
	if ($this->LoadPage("PageMenuUser")) { 
		$PageMenuUser .= $this->Format("{{include page=\"PageMenuUser\"}}");
	}

	// si pas de pas d'url de profil renseignée, on utilise ParametresUtilisateur
	if (empty($profileurl)) {
		$profileurl = $this->href("", "ParametresUtilisateur", "");
	}
	elseif ($profileurl=='WikiName') {
		$profileurl = $this->href("edit", $user['name'], "");
	}
	else {
		if ($this->IsWikiName($profileurl)) {
			$profileurl = $this->href('', $profileurl);
		}
	}
}
// cas d'une personne non connectée
else {
	$connected = false;
	// si l'authentification passe mais la session n'est pas créée, on a un problème de cookie	
	if ($_REQUEST['action'] == 'checklogged') {
		$error = 'Vous devez accepter les cookies pour pouvoir vous connecter.';
	}
}

// on affiche le template
if (!class_exists('SquelettePhp')) include_once('tools/login/libs/squelettephp.class.php');
$squel = new SquelettePhp('tools/login/presentation/templates/'.$template);
$squel->set(array(
	"connected" => $connected,
	"user" => ((isset($user["name"])) ? $user["name"] : ((isset($_POST["name"])) ? $_POST["name"] : '' )), 
	"incomingurl" => $incomingurl, 
	"signupurl" => $signupurl, 
	"profileurl" => $profileurl,
	"userpage" => $userpage,
	"PageMenuUser" => $PageMenuUser,
	"btnclass" => $btnclass,
	"error" => $error
));

$output = (!empty($class)) ? '<div class="'.$class.'">'."\n".$squel->analyser()."\n".'</div>'."\n" : $squel->analyser() ;

echo $output;
?>