friendica-github/index.php
Zach Prezkuta 1f09e7ad23 Modify Javascript to improve page loading times
1. Add template category 'end' that places content right before final </body> tag
	2. Move most Javascript from tpl files into one cacheable file, theme.js
	3. Load scripts at end of the HTML document instead of in the header
	4. Minify several Javascript files

Note that the second and third things were only done for Frost and Frost Mobile. Doing it for every theme means going through every .tpl for every theme and rearranging the Javascript, which is tedious.
2012-07-28 09:57:16 -06:00

381 lines
10 KiB
PHP

<?php
/**
*
* Friendica
*
*/
/**
*
* bootstrap the application
*
*/
require_once('boot.php');
$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.
*
*/
$install = ((file_exists('.htconfig.php') && filesize('.htconfig.php')) ? false : true);
@include(".htconfig.php");
$lang = get_browser_language();
load_translation_table($lang);
/**
*
* Try to open the database;
*
*/
require_once("dba.php");
if(! $install) {
$db = new dba($db_host, $db_user, $db_pass, $db_data, $install);
unset($db_host, $db_user, $db_pass, $db_data);
/**
* Load configs from db. Overwrite configs from .htconfig.php
*/
load_config('config');
load_config('system');
require_once("session.php");
load_hooks();
call_hooks('init_1');
}
/**
*
* Important stuff we always need to do.
*
* The order of these may be important so use caution if you think they're all
* intertwingled with no logical order and decide to sort it out. Some of the
* dependencies have changed, but at least at one time in the recent past - the
* order was critical to everything working properly
*
*/
session_start();
/**
* Language was set earlier, but we can over-ride it in the session.
* We have to do it here because the session was just now opened.
*/
if(array_key_exists('system_language',$_POST)) {
if(strlen($_POST['system_language']))
$_SESSION['language'] = $_POST['system_language'];
else
unset($_SESSION['language']);
}
if((x($_SESSION,'language')) && ($_SESSION['language'] !== $lang)) {
$lang = $_SESSION['language'];
load_translation_table($lang);
}
if((x($_GET,'zrl')) && (! $install)) {
$_SESSION['my_url'] = $_GET['zrl'];
$a->query_string = preg_replace('/[\?&]zrl=(.*?)([\?&]|$)/is','',$a->query_string);
zrl_init($a);
}
/**
*
* For Mozilla auth manager - still needs sorting, and this might conflict with LRDD header.
* Apache/PHP lumps the Link: headers into one - and other services might not be able to parse it
* this way. There's a PHP flag to link the headers because by default this will over-write any other
* link header.
*
* What we really need to do is output the raw headers ourselves so we can keep them separate.
*
*/
// header('Link: <' . $a->get_baseurl() . '/amcd>; rel="acct-mgmt";');
if((x($_SESSION,'authenticated')) || (x($_POST,'auth-params')) || ($a->module === 'login'))
require("auth.php");
if(! x($_SESSION,'authenticated'))
header('X-Account-Management-Status: none');
/*
* Create the page head after setting the language
* and getting any auth credentials
*/
$a->init_pagehead();
/**
* Build the page ending -- this is stuff that goes right before
* the closing </body> tag
*/
$a->init_page_end();
if(! x($_SESSION,'sysmsg'))
$_SESSION['sysmsg'] = array();
if(! x($_SESSION,'sysmsg_info'))
$_SESSION['sysmsg_info'] = array();
/*
* check_config() is responsible for running update scripts. These automatically
* update the DB schema whenever we push a new one out. It also checks to see if
* any plugins have been added or removed and reacts accordingly.
*/
if($install)
$a->module = 'install';
else
check_config($a);
nav_set_selected('nothing');
$arr = array('app_menu' => $a->apps);
call_hooks('app_menu', $arr);
$a->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 $_POST variables)
* "module"_afterpost
* "module"_content - the string return of this function contains our page body
*
* Modules which emit other serialisations besides HTML (XML,JSON, etc.) should do
* so within the module init and/or post functions and then invoke killme() to terminate
* further processing.
*/
if(strlen($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 not, next look for a 'standard' program module in the 'mod' directory
*/
if((! $a->module_loaded) && (file_exists("mod/{$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.' )
));
}
}
/**
* load current theme info
*/
$theme_info_file = "view/theme/".current_theme()."/theme.php";
if (file_exists($theme_info_file)){
require_once($theme_info_file);
}
/* initialise content region */
if(! x($a->page,'content'))
$a->page['content'] = '';
if(! $install)
call_hooks('page_content_top',$a->page['content']);
/**
* Call module functions
*/
if($a->module_loaded) {
$a->page['page_title'] = $a->module;
$placeholder = '';
if(function_exists($a->module . '_init')) {
call_hooks($a->module . '_mod_init', $placeholder);
$func = $a->module . '_init';
$func($a);
}
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"]."/theme.php")) {
// require_once("view/theme/".$a->theme_info["extends"]."/theme.php");
// if(function_exists(str_replace('-','_',$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 . '_afterpost'))) {
call_hooks($a->module . '_mod_afterpost',$placeholder);
$func = $a->module . '_afterpost';
$func($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_user())
$homebase = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
if(isset($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($_SERVER["SERVER_PROTOCOL"] . ' 403 ' . t('Permission denied.'));
}
/**
*
* Report anything which needs to be communicated in the notification area (before the main body)
*
*/
/*if(x($_SESSION,'sysmsg')) {
$a->page['content'] = "<div id=\"sysmsg\" class=\"error-message\">{$_SESSION['sysmsg']}</div>\r\n"
. ((x($a->page,'content')) ? $a->page['content'] : '');
$_SESSION['sysmsg']="";
unset($_SESSION['sysmsg']);
}
if(x($_SESSION,'sysmsg_info')) {
$a->page['content'] = "<div id=\"sysmsg_info\" class=\"info-message\">{$_SESSION['sysmsg_info']}</div>\r\n"
. ((x($a->page,'content')) ? $a->page['content'] : '');
$_SESSION['sysmsg_info']="";
unset($_SESSION['sysmsg_info']);
}*/
call_hooks('page_end', $a->page['content']);
/**
*
* Add a place for the pause/resume Ajax indicator
*
*/
$a->page['content'] .= '<div id="pause"></div>';
/**
*
* Add the navigation (menu) template
*
*/
if($a->module != 'install') {
nav($a);
}
/**
* Build the page - now that we have all the components
*/
$a->page['htmlhead'] = replace_macros($a->page['htmlhead'], array('$stylesheet' => current_theme_url()));
$page = $a->page;
$profile = $a->profile;
header("Content-type: text/html; charset=utf-8");
$template = 'view/theme/' . current_theme() . '/'
. ((x($a->page,'template')) ? $a->page['template'] : 'default' ) . '.php';
if(file_exists($template))
require_once($template);
else
require_once(str_replace('theme/' . current_theme() . '/', '', $template));
session_write_close();
exit;