<?php
/**
* @file index.php
*
* @brief The main entry point to the application.
*
* Bootstrap the application, load configuration, load modules, load theme, etc.
*/
/*
* bootstrap the application
*/
require_once('boot.php');
// our global App object
$a = new App;
/*
* Load the configuration file which contains our DB credentials.
* Ignore errors. If the file doesn't exist or is empty, we are running in
* installation mode.
*/
$a->install = ((file_exists('.htconfig.php') && filesize('.htconfig.php')) ? false : true);
@include('.htconfig.php');
$a->timezone = ((x($default_timezone)) ? $default_timezone : 'UTC');
date_default_timezone_set($a->timezone);
/*
* Try to open the database;
*/
require_once('include/dba/dba_driver.php');
if(! $a->install) {
$db = dba_factory($db_host, $db_port, $db_user, $db_pass, $db_data, $db_type, $a->install);
unset($db_host, $db_port, $db_user, $db_pass, $db_data, $db_type);
/**
* Load configs from db. Overwrite configs from .htconfig.php
*/
load_config('config');
load_config('system');
load_config('feature');
require_once('include/session.php');
load_hooks();
call_hooks('init_1');
$a->language = get_best_language();
load_translation_table($a->language);
// Force the cookie to be secure (https only) if this site is SSL enabled. Must be done before session_start().
if(intval($a->config['system']['ssl_cookie_protection'])) {
$arr = session_get_cookie_params();
session_set_cookie_params(
((isset($arr['lifetime'])) ? $arr['lifetime'] : 0),
((isset($arr['path'])) ? $arr['path'] : '/'),
((isset($arr['domain'])) ? $arr['domain'] : $a->get_hostname()),
((isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on') ? true : false),
((isset($arr['httponly'])) ? $arr['httponly'] : true));
}
}
else {
// load translations but do not check plugins as we have no database
$a->language = get_best_language();
load_translation_table($a->language,true);
}
/**
*
* Important stuff we always need to do.
*
* The order of these may be important so use caution if you think they're all
* intertwingled with no logical order and decide to sort it out. Some of the
* dependencies have changed, but at least at one time in the recent past - the
* order was critical to everything working properly
*
*/
session_start();
/**
* Language was set earlier, but we can over-ride it in the session.
* We have to do it here because the session was just now opened.
*/
if(array_key_exists('system_language',$_POST)) {
if(strlen($_POST['system_language']))
$_SESSION['language'] = $_POST['system_language'];
else
unset($_SESSION['language']);
}
if((x($_SESSION, 'language')) && ($_SESSION['language'] !== $lang)) {
$a->language = $_SESSION['language'];
load_translation_table($a->language);
}
if((x($_GET,'zid')) && (! $a->install)) {
$a->query_string = strip_zids($a->query_string);
if(! local_channel()) {
$_SESSION['my_address'] = $_GET['zid'];
zid_init($a);
}
}
if((x($_SESSION, 'authenticated')) || (x($_POST, 'auth-params')) || ($a->module === 'login'))
require('include/auth.php');
if(! x($_SESSION, 'sysmsg'))
$_SESSION['sysmsg'] = array();
if(! x($_SESSION, 'sysmsg_info'))
$_SESSION['sysmsg_info'] = array();
/*
* check_config() is responsible for running update scripts. These automatically
* update the DB schema whenever we push a new one out. It also checks to see if
* any plugins have been added or removed and reacts accordingly.
*/
if($a->install) {
/* Allow an exception for the view module so that pcss will be interpreted during installation */
if($a->module != 'view')
$a->module = 'setup';
}
else
check_config($a);
nav_set_selected('nothing');
$arr = array('app_menu' => $a->get_apps());
call_hooks('app_menu', $arr);
$a->set_apps($arr['app_menu']);
/**
*
* We have already parsed the server path into $a->argc and $a->argv
*
* $a->argv[0] is our module name. We will load the file mod/{$a->argv[0]}.php
* and use it for handling our URL request.
* The module file contains a few functions that we call in various circumstances
* and in the following order:
*
* "module"_init
* "module"_post (only called if there are $_POST variables)
* "module"_content - the string return of this function contains our page body
*
* Modules which emit other serialisations besides HTML (XML,JSON, etc.) should do
* so within the module init and/or post functions and then invoke killme() to terminate
* further processing.
*/
if(strlen($a->module)) {
/**
*
* We will always have a module name.
* First see if we have a plugin which is masquerading as a module.
*
*/
if(is_array($a->plugins) && in_array($a->module,$a->plugins) && file_exists("addon/{$a->module}/{$a->module}.php")) {
include_once("addon/{$a->module}/{$a->module}.php");
if(function_exists($a->module . '_module'))
$a->module_loaded = true;
}
if((strpos($a->module,'admin') === 0) && (! is_site_admin())) {
$a->module_loaded = false;
notice( t('Permission denied.') . EOL);
goaway(z_root());
}
/**
* If the site has a custom module to over-ride the standard module, use it.
* Otherwise, look for the standard program module in the 'mod' directory
*/
if(! $a->module_loaded) {
if(file_exists("mod/site/{$a->module}.php")) {
include_once("mod/site/{$a->module}.php");
$a->module_loaded = true;
}
elseif(file_exists("mod/{$a->module}.php")) {
include_once("mod/{$a->module}.php");
$a->module_loaded = true;
}
}
/**
* The URL provided does not resolve to a valid module.
*
* On Dreamhost sites, quite often things go wrong for no apparent reason and they send us to '/internal_error.html'.
* We don't like doing this, but as it occasionally accounts for 10-20% or more of all site traffic -
* we are going to trap this and redirect back to the requested page. As long as you don't have a critical error on your page
* this will often succeed and eventually do the right thing.
*
* Otherwise we are going to emit a 404 not found.
*/
if(! $a->module_loaded) {
// Stupid browser tried to pre-fetch our Javascript img template. Don't log the event or return anything - just quietly exit.
if((x($_SERVER, 'QUERY_STRING')) && preg_match('/{[0-9]}/', $_SERVER['QUERY_STRING']) !== 0) {
killme();
}
if((x($_SERVER, 'QUERY_STRING')) && ($_SERVER['QUERY_STRING'] === 'q=internal_error.html') && isset($dreamhost_error_hack)) {
logger('index.php: dreamhost_error_hack invoked. Original URI =' . $_SERVER['REQUEST_URI']);
goaway($a->get_baseurl() . $_SERVER['REQUEST_URI']);
}
logger('index.php: page not found: ' . $_SERVER['REQUEST_URI'] . ' ADDRESS: ' . $_SERVER['REMOTE_ADDR'] . ' QUERY: ' . $_SERVER['QUERY_STRING'], LOGGER_DEBUG);
header($_SERVER['SERVER_PROTOCOL'] . ' 404 ' . t('Not Found'));
$tpl = get_markup_template('404.tpl');
$a->page['content'] = replace_macros($tpl, array(
'$message' => t('Page not found.')
));
// pretend this is a module so it will initialise the theme
$a->module = '404';
$a->module_loaded = true;
}
}
/* initialise content region */
if(! x($a->page, 'content'))
$a->page['content'] = '';
if(! ($a->module === 'setup')) {
/* set JS cookie */
if($_COOKIE['jsAvailable'] != 1) {
$a->page['content'] .= '<script>document.cookie="jsAvailable=1; path=/"; var jsMatch = /\&JS=1/; if (!jsMatch.exec(location.href)) { location.href = location.href + "&JS=1"; }</script>';
/* emulate JS cookie if cookies are not accepted */
if ($_GET['JS'] == 1) {
$_COOKIE['jsAvailable'] = 1;
}
}
call_hooks('page_content_top', $a->page['content']);
}
/**
* Call module functions
*/
if($a->module_loaded) {
$a->page['page_title'] = $a->module;
$placeholder = '';
/**
* No theme has been specified when calling the module_init functions
* For this reason, please restrict the use of templates to those which
* do not provide any presentation details - as themes will not be able
* to over-ride them.
*/
if(function_exists($a->module . '_init')) {
call_hooks($a->module . '_mod_init', $placeholder);
$func = $a->module . '_init';
$func($a);
}
/**
* Do all theme initialiasion here before calling any additional module functions.
* The module_init function may have changed the theme.
* Additionally any page with a Comanche template may alter the theme.
* So we'll check for those now.
*/
/**
* In case a page has overloaded a module, see if we already have a layout defined
* otherwise, if a PDL file exists for this module, use it
* The member may have also created a customised PDL that's stored in the config
*/
load_pdl($a);
/**
* load current theme info
*/
$theme_info_file = 'view/theme/' . current_theme() . '/php/theme.php';
if (file_exists($theme_info_file)){
require_once($theme_info_file);
}
if(function_exists(str_replace('-', '_', current_theme()) . '_init')) {
$func = str_replace('-', '_', current_theme()) . '_init';
$func($a);
}
elseif (x($a->theme_info, 'extends') && file_exists('view/theme/' . $a->theme_info['extends'] . '/php/theme.php')) {
require_once('view/theme/' . $a->theme_info['extends'] . '/php/theme.php');
if(function_exists(str_replace('-', '_', $a->theme_info['extends']) . '_init')) {
$func = str_replace('-', '_', $a->theme_info['extends']) . '_init';
$func($a);
}
}
if(($_SERVER['REQUEST_METHOD'] === 'POST') && (! $a->error)
&& (function_exists($a->module . '_post'))
&& (! x($_POST, 'auth-params'))) {
call_hooks($a->module . '_mod_post', $_POST);
$func = $a->module . '_post';
$func($a);
}
if((! $a->error) && (function_exists($a->module . '_content'))) {
$arr = array('content' => $a->page['content']);
call_hooks($a->module . '_mod_content', $arr);
$a->page['content'] = $arr['content'];
$func = $a->module . '_content';
$arr = array('content' => $func($a));
call_hooks($a->module . '_mod_aftercontent', $arr);
$a->page['content'] .= $arr['content'];
}
}
// If you're just visiting, let javascript take you home
if(x($_SESSION, 'visitor_home')) {
$homebase = $_SESSION['visitor_home'];
} elseif(local_channel()) {
$homebase = $a->get_baseurl() . '/channel/' . $a->channel['channel_address'];
}
if(isset($homebase)) {
$a->page['content'] .= '<script>var homebase = "' . $homebase . '";</script>';
}
// now that we've been through the module content, see if the page reported
// a permission problem and if so, a 403 response would seem to be in order.
if(stristr(implode("", $_SESSION['sysmsg']), t('Permission denied'))) {
header($_SERVER['SERVER_PROTOCOL'] . ' 403 ' . t('Permission denied.'));
}
call_hooks('page_end', $a->page['content']);
if(! $a->install)
check_cron_broken();
construct_page($a);
session_write_close();
exit;
