<?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); if(! $db->connected) { system_unavailable(); } unset($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; } } /** * This provides a place for plugins to register module handlers which don't otherwise exist on the system. * If the plugin sets 'installed' to true we won't throw a 404 error for the specified module even if * there is no specific module file or matching plugin name. * The plugin should catch at least one of the module hooks for this URL. */ $x = array('module' => $a->module, 'installed' => false); call_hooks('module_loaded', $x); if($x['installed']) $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;