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<?php
//
// This file is the front door entry point to all pages.
//
require_once('debug.php');
require_once('common.php');
require_once('Lang.php');
require_once('Page.php');
require_once('PageStore.php');
require_once('UserStore.php');
require_once('Properties.php');
require_once('Auth.php');
require_once('Renderer.php');
require_once('PageNav.php');
require_once('Search.php');
require_once('HttpUtil.php');
$prop = new Properties(get_site_config());
$root = $prop->getGlobal('siteroot');
$docroot = $prop->getGlobal('sitedocroot');
$robot = is_robot(); // true if being crawled
$static = false; // true iff we are making a static copy.
// this call must be before any pages are created
Lang::init( $prop->getGlobal('default-lang'), split(' ',$prop->getGlobal('languages')) );
$ps = PageStoreFactory::create($prop->getGlobal('pagebackend'),$prop);
$page = $ps->getPage($_SERVER['REQUEST_URI']);
$renderer = new Renderer($prop);
$nav = new PageNav($prop);
$users = UserStoreFactory::create($prop->getGlobal('userbackend'));
$auth = new Auth($users,'authenticate');
$search = new Search(IndexFactory::create($prop->getGlobal('indexbackend')));
$action = get('a',get('action','view'));
$authaction = get('auth','');
$query = preg_replace("'.*\?(.*)$'",'$1',$_SERVER['REQUEST_URI']);
if ($page->fnf) {
$path = $search->findClosestPage($page->path);
if ($path) {
$redirectpage = $ps->getPage($path);
if ($redirectpage->fnf) {
$search->deIndexPage($redirectpage);
}
http::redirect("$root$path");
}
else {
$renderer->displayFnf($page);
}
return;
}
if ($action == 'style') {
$renderer->style($page); // style does not require auth
return;
}
$auth->init();
if ($authaction == 'logout') {
startsession();
$auth->logout();
}
elseif ($authaction == 'login') {
startsession();
$ok = $auth->login($error);
if ($ok) {
// continue on with any remaining actions...
}
elseif(!$ok) {
$renderer->display('login', $auth->getLoginForm($prop->getGlobal('sitename'), $error));
return;
}
}
if (!$page->may('anonymous',$action)) {
startsession();
$username = $auth->username();
if ($username == '') {
$renderer->display('login', $auth->getLoginForm($prop->getGlobal('sitename')));
return;
}
elseif (!$page->may($username,$action)) {
$renderer->displayError('Permission Denied', 'You do not have permission to do that');
return;
}
}
## LANGUAGE ##
if (isset($_REQUEST['lang'])) {
startsession();
Lang::set($_REQUEST['lang']);
}
else {
startsession();
}
## EDITOR ##
if ($action == 'edit' || $query == 'edit') {
startsession();
require_once("Editor.php");
$editor = new Editor($prop);
$edit_action = get('eaction',get('ea','edit'));
$action = $editor->handleRequest($page,$edit_action);
if ($action == '')
return; // $editor handled the request and finished
}
## SEARCH ##
$s = get('s');
if ($s) {
$result = $search->findByContent($s,$ps);
if ($result == '')
$result = _("no search results found.");
$renderer->renderPage($page,false,$result,true);
return;
}
## ACTIONS ##
if ($action == 'source') {
echo "<pre>";
echo htmlspecialchars($page->get('content'));
echo "</pre>";
}
elseif($action == 'print') {
$renderer->renderPage($page,true);
}
elseif ($action == 'view') {
if ($page->static) {
require_once('Cache.php');
$cache = new Cache($prop->getGlobal('cachedir'), $prop->getGlobal('siteroot'));
if ($cache->time($page->path) < $page->mtime) {
$cache->begin($page->path);
$renderer->renderPage($page);
$cache->end();
}
$cache->echofile($page->path);
}
else {
# dynamic module code here...
}
}
elseif ( $action == 'changes' ) {
require_once 'Changes.php';
$changes = new Changes($page,$search);
if (get('mode') == 'rss') {
header("Content-type: text/xml");
echo $changes->resultsRSS($pages,$ps);
}
else {
$html = $changes->results($pages,$ps);
$renderer->renderPage(&$page,false,$html,true);
}
return;
}
else {
die("an error occurred: unknown action $action");
}
/// functions ///
// so we only call session_start() once
function startsession() {
static $ses_set = false;
if (!$ses_set) {
session_start();
Lang::priority(); // make sure our new session includes 'lang'
$ses_set = true;
}
}
function is_robot() {
$agent = strtolower($_SERVER['HTTP_USER_AGENT']);
return preg_match('/^wget|^googlebot/',$agent);
}
return;
?>
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