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<?php
/*
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2007 Bharat Mediratta
*
* 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
include(dirname(__FILE__) . '/bootstrap.inc');
/*
* If they don't have a setup password, we assume that the config.php is empty and this is an
* initial install
*/
if (!@$gallery->getConfig('setup.password')) {
/* May be invalid if a multisite install lost its config.php; galleryBaseUrl unknown */
header('Location: install/');
return;
}
if ($gallery->isEmbedded()) {
require_once(dirname(__FILE__) . '/init.inc');
} else {
/* If this is a request for a public data file, give it to the user immediately */
$unsanitizedView = isset($_GET[GALLERY_FORM_VARIABLE_PREFIX . 'view']) ?
$_GET[GALLERY_FORM_VARIABLE_PREFIX . 'view'] : null;
$itemId = (int)(isset($_GET[GALLERY_FORM_VARIABLE_PREFIX . 'itemId']) ?
$_GET[GALLERY_FORM_VARIABLE_PREFIX . 'itemId'] : null);
if ($unsanitizedView == 'core.DownloadItem' && !empty($itemId)) {
/*
* Our URLs are immutable because they have the serial numbers embedded. If the browser
* presents us with an If-Modified-Since then it has the latest version of the file already.
*/
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])
|| (function_exists('getallheaders')
&& ($headers = getallheaders())
&& (isset($headers['If-Modified-Since'])
|| isset($headers['If-modified-since'])))) {
header('HTTP/1.0 304 Not Modified');
return;
}
/*
* Fast download depends on having data.gallery.cache set, so set it now. If for some
* reason we fail, we'll reset it in init.inc (but that's OK).
*/
$gallery->setConfig(
'data.gallery.cache', $gallery->getConfig('data.gallery.base') . 'cache/');
$path = GalleryDataCache::getCachePath(
array('type' => 'fast-download', 'itemId' => $itemId));
/* We don't have a platform yet so we have to use the raw file_exists */
/* Disable fast-download in maintenance mode, admins still get via core.DownloadItem */
if (file_exists($path) && !$gallery->getConfig('mode.maintenance')) {
include($path);
if (GalleryFastDownload()) {
return;
}
}
}
/* Otherwise, proceed with our regular process */
require_once(dirname(__FILE__) . '/init.inc');
$ret = GalleryInitFirstPass();
if ($ret) {
_GalleryMain_errorHandler($ret, null, false);
return;
}
/* Process the request */
GalleryMain();
}
/**
* Main handler for all Gallery pages/requests.
* @package Gallery
*/
function GalleryMain($embedded=false) {
global $gallery;
/* Process the request */
list ($ret, $g2Data) = _GalleryMain($embedded);
if (!$ret) {
$gallery->performShutdownActions();
/* Write out our session data */
$session =& $gallery->getSession();
$ret = $session->save();
}
/* Complete our transaction */
if (!$ret && $gallery->isStorageInitialized()) {
$storage =& $gallery->getStorage();
$ret = $storage->commitTransaction();
}
/* Error handling (or redirect info in debug mode) */
if ($ret) {
_GalleryMain_errorHandler($ret, $g2Data);
$g2Data['isDone'] = true;
if ($ret && $gallery->isStorageInitialized()) {
/* Nuke our transaction, too */
$storage =& $gallery->getStorage();
$storage->rollbackTransaction();
/* Reset the auth token */
if ($ret->getErrorCode() & ERROR_REQUEST_FORGED) {
$session =& $gallery->getSession();
$ret2 = $storage->beginTransaction();
if (!$ret2) {
$ret2 = $session->save();
}
if (!$ret2) {
$storage->commitTransaction();
}
}
}
} else if (isset($g2Data['redirectUrl'])) {
/* If we're in debug mode, show a redirect page */
print '<h1> Debug Redirect </h1> ' .
'Not automatically redirecting you to the next page because we\'re in debug mode<br/>';
printf('<a href="%s">Continue to the next page</a>', $g2Data['redirectUrl']);
print '<hr/>';
print '<pre>';
print $gallery->getDebugBuffer();
print '</pre>';
}
return $g2Data;
}
/**
* Process our request.
* @return array object GalleryStatus a status code
* array
*/
function _GalleryMain($embedded=false) {
global $gallery;
$urlGenerator =& $gallery->getUrlGenerator();
/* Figure out the target view/controller */
list ($controllerName, $viewName) = GalleryUtilities::getRequestVariables('controller', 'view');
$controllerName = is_string($controllerName) ? $controllerName : null;
$viewName = is_string($viewName) ? $viewName : null;
$gallery->debug("controller $controllerName, view $viewName");
/* Check if core module needs upgrading */
list ($ret, $core) = GalleryCoreApi::loadPlugin('module', 'core', true);
if ($ret) {
return array($ret, null);
}
$installedVersions = $core->getInstalledVersions();
if ($installedVersions['core'] != $core->getVersion()) {
if ($redirectUrl = @$gallery->getConfig('mode.maintenance')) {
/* Maintenance mode - redirect if given URL, else simple message */
if ($redirectUrl === true) {
print $core->translate('Site is temporarily down for maintenance.');
exit;
}
} else {
$gallery->debug('Redirect to the upgrade wizard, core module version is out of date');
$redirectUrl = $urlGenerator->getCurrentUrlDir(true) . 'upgrade/index.php';
}
return array(null, _GalleryMain_doRedirect($redirectUrl));
}
$ret = GalleryInitSecondPass();
if ($ret) {
return array($ret, null);
}
/* Load and run the appropriate controller */
$results = array();
if (!empty($controllerName)) {
GalleryCoreApi::requireOnce('modules/core/classes/GalleryController.class');
list ($ret, $controller) = GalleryController::loadController($controllerName);
if ($ret) {
return array($ret, null);
}
if (!$embedded && $gallery->getConfig('mode.embed.only')
&& !$controller->isAllowedInEmbedOnly()) {
/* Lock out direct access when embed-only is set */
if (($redirectUrl = $gallery->getConfig('mode.embed.only')) === true) {
return array(GalleryCoreApi::error(ERROR_PERMISSION_DENIED), null);
}
return array(null, _GalleryMain_doRedirect($redirectUrl));
}
if ($gallery->getConfig('mode.maintenance') && !$controller->isAllowedInMaintenance()) {
/* Maintenance mode - allow admins, else redirect to given or standard URL */
list ($ret, $isAdmin) = GalleryCoreApi::isUserInSiteAdminGroup();
if ($ret) {
return array($ret, null);
}
if (!$isAdmin) {
if (($redirectUrl = $gallery->getConfig('mode.maintenance')) === true) {
$redirectUrl = $urlGenerator->generateUrl(
array('view' => 'core.MaintenanceMode'), array('forceFullUrl' => true));
}
return array(null, _GalleryMain_doRedirect($redirectUrl));
}
}
/* Get our form and return variables */
$form = GalleryUtilities::getFormVariables('form');
/* Verify the genuineness of the request */
if (!$controller->omitAuthTokenCheck()) {
$ret = GalleryController::assertIsGenuineRequest();
if ($ret) {
return array($ret, null);
}
}
/* Let the controller handle the input */
list ($ret, $results) = $controller->handleRequest($form);
if ($ret) {
return array($ret, null);
}
/* Check to make sure we got back everything we want */
if (!isset($results['status'])
|| !isset($results['error'])
|| (!isset($results['redirect'])
&& !isset($results['delegate'])
&& !isset($results['return']))) {
return array(GalleryCoreApi::error(ERROR_BAD_PARAMETER, __FILE__, __LINE__,
'Controller results are missing status, error, (redirect, delegate, return)'),
null);
}
/* Try to return if the controller instructs it */
if (!empty($results['return'])) {
list ($ret, $navigationLinks) = $urlGenerator->getNavigationLinks(1);
if ($ret) {
return array($ret, null);
}
if (count($navigationLinks) > 0) {
/* Go back to the previous navigation point in our history */
$redirectUrl = $navigationLinks[0]['url'];
} else {
$redirectUrl = GalleryUtilities::getRequestVariables('return');
if (empty($redirectUrl)) {
$redirectUrl = GalleryUtilities::getRequestVariables('formUrl');
}
}
}
/* Failing that, redirect if so instructed */
if (empty($redirectUrl) && !empty($results['redirect'])) {
/* If we have a status, store its data in the session and attach it to the URL */
if (!empty($results['status'])) {
$session =& $gallery->getSession();
$results['redirect']['statusId'] = $session->putStatus($results['status']);
}
$urlToGenerate = $results['redirect'];
/* Keep our navId in the URL */
$navId = $urlGenerator->getNavigationId();
if (!empty($navId)) {
$urlToGenerate['navId'] = $navId;
}
$redirectUrl = $urlGenerator->generateUrl($urlToGenerate,
array('forceFullUrl' => true));
}
/* If we have a redirect URL use it */
if (!empty($redirectUrl)) {
return array(null, _GalleryMain_doRedirect($redirectUrl, null, $controllerName));
}
/* Let the controller specify the next view */
if (!empty($results['delegate'])) {
/* Load any errors into the request */
if (!empty($results['error'])) {
foreach ($results['error'] as $error) {
GalleryUtilities::putRequestVariable($error, 1);
}
}
/* Save the view name, put the rest into the request so the view can get it */
foreach ($results['delegate'] as $key => $value) {
switch($key) {
case 'view':
$viewName = $value;
break;
default:
GalleryUtilities::putRequestVariable($key, $value);
break;
}
}
}
}
/* Load and run the appropriate view */
if (empty($viewName)) {
$viewName = GALLERY_DEFAULT_VIEW;
GalleryUtilities::putRequestVariable('view', $viewName);
}
list ($ret, $view) = GalleryView::loadView($viewName);
if ($ret) {
return array($ret, null);
}
if ($gallery->getConfig('mode.maintenance') && !$view->isAllowedInMaintenance()) {
/* Maintenance mode - allow admins, else redirect to given url or show standard view */
list ($ret, $isAdmin) = GalleryCoreApi::isUserInSiteAdminGroup();
if ($ret) {
return array($ret, null);
}
if (!$isAdmin) {
if (($redirectUrl = $gallery->getConfig('mode.maintenance')) !== true) {
return array(null, _GalleryMain_doRedirect($redirectUrl));
}
$viewName = 'core.MaintenanceMode';
list ($ret, $view) = GalleryView::loadView($viewName);
if ($ret) {
return array($ret, null);
}
}
}
if (!$embedded && $gallery->getConfig('mode.embed.only') && !$view->isAllowedInEmbedOnly()) {
/* Lock out direct access when embed-only is set */
if (($redirectUrl = $gallery->getConfig('mode.embed.only')) === true) {
return array(GalleryCoreApi::error(ERROR_PERMISSION_DENIED), null);
}
return array(null, _GalleryMain_doRedirect($redirectUrl));
}
/* Check if the page is cached and return the cached version, else generate the page */
list ($ret, $shouldCache) = GalleryDataCache::shouldCache('read', 'full');
if ($ret) {
return array($ret, null);
}
$html = '';
if ($shouldCache) {
$session =& $gallery->getSession();
list ($ret, $html) = GalleryDataCache::getPageData(
'page', $urlGenerator->getCacheableUrl());
if ($ret) {
return array($ret, null);
}
if (!empty($html) && $embedded) {
/* Also get the theme data */
list ($ret, $themeData) = GalleryDataCache::getPageData(
'theme', $urlGenerator->getCacheableUrl());
if ($ret) {
return array($ret, null);
}
}
}
if (!empty($html) && (!$embedded || !empty($themeData))) {
/* TODO: If we cache all the headers and replay them here, we could send a 304 back */
$session =& $gallery->getSession();
if (!$embedded) {
/* Set the appropriate charset in our HTTP header */
if (!headers_sent()) {
header('Content-Type: text/html; charset=UTF-8');
}
print $session->replaceTempSessionIdIfNecessary($html);
$data['isDone'] = true;
} else {
$html = unserialize($html);
$themeData = unserialize($themeData);
$data = $session->replaceSessionIdInData($html);
$data['themeData'] = $session->replaceSessionIdInData($themeData);
$data['isDone'] = false;
}
} else {
/* Initialize our container for template data */
$gallery->setCurrentView($viewName);
if ($view->isControllerLike()) {
/* Verify the genuineness of the request */
$ret = GalleryController::assertIsGenuineRequest();
if ($ret) {
return array($ret, null);
}
}
/* If we render directly to the browser, we need a session before, or no session at all */
if ($view->isImmediate() || $viewName == 'core.ProgressBar') {
/*
* Session: Find out whether we need to send a cookie & get a new sessionId and save it
* (make sure there's a sessionId before starting to render, but only if we need a
* session)
*/
$session =& $gallery->getSession();
$ret = $session->start();
if ($ret) {
return array($ret, null);
}
/* From now on, don't add navId/sessionId to URLs if there's no persistent session */
$session->doNotUseTempId();
}
/*
* If this is an immediate view, it will send its own output directly. This is used in the
* situation where we want to send back data that's not controlled by the layout. That's
* usually something that's not user-visible like a binary file.
*/
$data = array();
if ($view->isImmediate()) {
$status = isset($results['status']) ? $results['status'] : array();
$error = isset($results['error']) ? $results['error'] : array();
$ret = $view->renderImmediate($status, $error);
if ($ret) {
return array($ret, null);
}
$data['isDone'] = true;
} else {
GalleryCoreApi::requireOnce('modules/core/classes/GalleryTemplate.class');
$template = new GalleryTemplate(dirname(__FILE__));
list ($ret, $results, $theme) = $view->doLoadTemplate($template);
if ($ret) {
return array($ret, null);
}
if (isset($results['redirect']) || isset($results['redirectUrl'])) {
if (isset($results['redirectUrl'])) {
$redirectUrl = $results['redirectUrl'];
} else {
$redirectUrl = $urlGenerator->generateUrl($results['redirect'],
array('forceFullUrl' => true));
}
return array(null, _GalleryMain_doRedirect($redirectUrl, $template));
}
if (empty($results['body'])) {
return array(GalleryCoreApi::error(ERROR_BAD_PARAMETER, __FILE__, __LINE__,
'View results are missing body file'), null);
}
$templatePath = 'gallery:' . $results['body'];
$template->setVariable('l10Domain', $theme->getL10Domain());
$template->setVariable('isEmbedded', $embedded);
if ($viewName == 'core.ProgressBar') {
@ini_set('output_buffering', '0');
if (function_exists('apache_setenv')) {
@apache_setenv('no-gzip', '1');
}
/* Render progress bar pages immediately so that the user sees the bar moving */
$ret = $template->display($templatePath);
if ($ret) {
return array($ret, null);
}
$data['isDone'] = true;
} else {
list ($ret, $html) = $template->fetch($templatePath);
if ($ret) {
return array($ret, null);
}
/*
* Session: Find out whether we need to send a cookie & need a new session (only if
* we don't have one yet)
*/
$session =& $gallery->getSession();
$ret = $session->start();
if ($ret) {
return array($ret, null);
}
list ($ret, $shouldCache) = GalleryDataCache::shouldCache('write', 'full');
if ($ret) {
return array($ret, null);
}
if ($embedded) {
$html = $theme->splitHtml($html, $results);
}
if ($shouldCache && $results['cacheable']) {
$htmlForCache = $html;
if ($embedded) {
$themeDataForCache = $template->getVariable('theme');
}
}
if ($embedded) {
$data = $session->replaceSessionIdInData($html);
$data['themeData'] =& $template->getVariableByReference('theme');
$data['themeData'] = $session->replaceSessionIdInData($data['themeData']);
$data['isDone'] = false;
} else {
/* Set the appropriate charset in our HTTP header */
if (!headers_sent()) {
header('Content-Type: text/html; charset=UTF-8');
}
print $session->replaceTempSessionIdIfNecessary($html);
$data['isDone'] = true;
}
if ($shouldCache && $results['cacheable']) {
$session =& $gallery->getSession();
$cacheKey = $urlGenerator->getCacheableUrl();
$sessionId = $session->getId();
if (!empty($sessionId) && $sessionId != SESSION_TEMP_ID) {
$htmlForCache = $session->replaceSessionIdInData(
$htmlForCache, $sessionId, SESSION_TEMP_ID);
if ($embedded) {
$data['themeData'] = $session->replaceSessionIdInData(
$data['themeData'], $sessionId, SESSION_TEMP_ID);
}
}
if ($embedded) {
$htmlForCache = serialize($htmlForCache);
$ret = GalleryDataCache::putPageData('theme', $results['cacheable'],
$cacheKey, serialize($data['themeData']));
if ($ret) {
return array($ret, null);
}
}
$ret = GalleryDataCache::putPageData('page', $results['cacheable'],
$cacheKey, $htmlForCache);
if ($ret) {
return array($ret, null);
}
}
}
}
}
return array(null, $data);
}
function _GalleryMain_doRedirect($redirectUrl, $template=null, $controller=null) {
global $gallery;
$session =& $gallery->getSession();
$urlGenerator =& $gallery->getUrlGenerator();
/* Create a valid sessionId for guests, if required */
$ret = $session->start();
if ($ret) {
return array($ret, null);
}
$redirectUrl = $session->replaceTempSessionIdIfNecessary($redirectUrl);
$session->doNotUseTempId();
/*
* UserLogin returnUrls don't have a sessionId in the URL to replace, make sure there's a
* sessionId in the redirectUrl for users that don't use cookies
*/
if (!$session->isUsingCookies() && $session->isPersistent()
&& strpos($redirectUrl, $session->getKey()) === false) {
$redirectUrl = GalleryUrlGenerator::appendParamsToUrl($redirectUrl,
array($session->getKey() => $session->getId()));
}
if ($gallery->getDebug() == false || $gallery->getDebug() == 'logged') {
/*
* The URL generator makes HTML 4.01 compliant URLs using & but we don't want those in
* our Location: header
*/
$redirectUrl = str_replace('&', '&', $redirectUrl);
$redirectUrl = rtrim($redirectUrl, '&? ');
$redirectUrl = $urlGenerator->makeAbsoluteUrl($redirectUrl);
/*
* IIS 3.0 - 5.0 webservers will ignore all other headers if the location header is set. It
* will simply not send other headers, eg. the set-cookie header, which is important for us
* in the login and logout requests / redirects. See:
* http://support.microsoft.com/kb/q176113/ Our solution: detect IIS version and append
* GALLERYSID to the Location URL if necessary
*/
if (in_array($controller, array('core.Logout', 'core.UserLogin', 'publishxp.Login'))) {
/* Check if it's IIS and if the version is < 6.0 */
$webserver = GalleryUtilities::getServerVar('SERVER_SOFTWARE');
if (!empty($webserver)
&& preg_match('|^Microsoft-IIS/(\d)\.\d$|', trim($webserver), $matches)
&& $matches[1] < 6) {
/*
* It is IIS and it's a version with this bug, check if GALLERYSID is already in the
* URL, else append it
*/
$session =& $gallery->getSession();
$sessionParamString =
GalleryUtilities::prefixFormVariable(urlencode($session->getKey())) . '='
. urlencode($session->getId());
if ($session->isPersistent() && !strstr($redirectUrl, $sessionParamString)) {
$redirectUrl .= (strpos($redirectUrl, '?') === false) ? '?' : '&';
$redirectUrl .= $sessionParamString;
}
}
}
GalleryUtilities::setResponseHeader("Location: $redirectUrl");
return array('isDone' => true);
}
return array('isDone' => true, 'redirectUrl' => $redirectUrl, 'template' => $template);
}
function _GalleryMain_errorHandler($error, $g2Data=null, $initOk=true) {
GalleryCoreApi::requireOnce('modules/core/ErrorPage.inc');
ErrorPageView::errorHandler($error, $g2Data, $initOk);
}
?>
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