X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=index.php;h=05eef6c6e0bfe0f2e7475b29798ff96866702e6d;hb=ef64c5187df80da2065655726b8d05a9ce6b0e0a;hp=2353355f0cb0717c16eafd2c181d934bcbd89ede;hpb=d11c1c63c02e88b3c73336741a2240ccc18d3b02;p=friendica.git

diff --git a/index.php b/index.php
index 2353355f0c..05eef6c6e0 100644
--- a/index.php
+++ b/index.php
@@ -1,67 +1,237 @@
 <?php
 
-require_once("boot.php");
+error_reporting(E_ERROR | E_WARNING | E_PARSE);
 
-$a = new App;
+/**
+ *
+ * Friendika
+ *
+ */
+
+/**
+ *
+ * bootstrap the application
+ *
+ */
 
-$debug_text = ''; // Debugging functions should never be used on production systems.
+require_once('boot.php');
 
-// Setup the database.
+$a = new App;
 
-$install = ((file_exists('.htconfig.php')) ? false : true);
+/**
+ *
+ * Load the configuration file which contains our DB credentials.
+ * Ignore errors. If the file doesn't exist or is empty, we are running in installation mode.
+ *
+ */
+
+$install = ((file_exists('.htconfig.php') && filesize('.htconfig.php')) ? false : true);
 
 @include(".htconfig.php");
+
+/**
+ *
+ * Get the language setting directly from system variables, bypassing get_config()
+ * as database may not yet be configured.
+ * 
+ * If possible, we use the value from the browser.
+ *
+ */
+
+if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+	$langs = preg_split("/[,-]/",$_SERVER['HTTP_ACCEPT_LANGUAGE'],2);
+	$lang = $langs[0];
+} else {
+	$lang = ((isset($a->config['system']['language'])) ? $a->config['system']['language'] : 'en');
+}
+
+	
+load_translation_table($lang);
+
+/**
+ *
+ * Try to open the database;
+ *
+ */
+
 require_once("dba.php");
 $db = new dba($db_host, $db_user, $db_pass, $db_data, $install);
-	unset($db_host, $db_user, $db_pass, $db_data);
+        unset($db_host, $db_user, $db_pass, $db_data);
+
+
+/**
+ *
+ * Important stuff we always need to do.
+ * Initialise authentication and  date and time. 
+ * Create the HTML head for the page, even if we may not use it (xml, etc.)
+ * 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
+ *
+ */
+
+if(! $install) {
+	require_once("session.php");
+	load_hooks();
+	call_hooks('init_1');
+}
+
+
 
-require_once("session.php");
 require_once("datetime.php");
 
-date_default_timezone_set(($default_timezone) ? $default_timezone : 'UTC');
+$a->timezone = (($default_timezone) ? $default_timezone : 'UTC');
+
+date_default_timezone_set($a->timezone);
 
 $a->init_pagehead();
 
 session_start();
 
-if((x($_SESSION,'authenticated')) || (x($_POST['auth-params'])))
+/**
+ * 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(x($_POST,'system_language'))
+	$_SESSION['language'] = $_POST['system_language'];
+if((x($_SESSION,'language')) && ($_SESSION['language'] !== $lang)) {
+	$lang = $_SESSION['language'];
+	load_translation_table($lang);
+}
+
+
+/**
+ *
+ * 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($_SESSION,'authenticated'))
+	header('X-Account-Management-Status: none');
+
+if(! x($_SESSION,'sysmsg'))
+	$_SESSION['sysmsg'] = '';
+
+/*
+ * check_config() is responsible for running update scripts. These automatically 
+ * update the DB schema whenever we push a new one out. It also checks to see if
+ * any plugins have been added or removed and reacts accordingly. 
+ */
+
+
 if($install)
 	$a->module = 'install';
+else
+	check_config($a);
+
+
+$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($a->module)) {
-	if(file_exists("mod/{$a->module}.php")) {
-		include("mod/{$a->module}.php");
+
+	/**
+	 *
+	 * We will always have a module name.
+	 * First see if we have a plugin which is masquerading as a module.
+	 *
+	 */
+
+	if(is_array($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;
 	}
-	else {
+
+	/**
+	 *
+	 * 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(! $a->module_loaded) {
+		if((x($_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'] . ' QUERY: ' . $_SERVER['QUERY_STRING'], LOGGER_DEBUG);
 		header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . t('Not Found'));
-		notice( t('Page not found' ) . EOL);
+		notice( t('Page not found.' ) . EOL);
 	}
 }
 
-// invoke module functions
-// Important: Modules normally do not emit content, unless you need it for debugging.
-// The module_init, module_post, and module_afterpost functions process URL parameters and POST processing.
-// The module_content function returns content text to this file where it is included on the page.
-// Modules emitting XML/Atom, etc. should do so idirectly and promptly exit before the HTML page can be rendered.
-// "Most" HTML resides in the view directory as text templates with macro substitution. 
-// They look like HTML with PHP variables but only a couple pass through the PHP processor - those with .php extensions.
-// The macro substitution is defined per page for the .tpl files. 
-// Information transfer between functions can be accomplished via the App session '$a' and its related variables.
-// x() queries both a variable's existence and that it is "non-zero" or "non-empty" depending on how it is called. 
-// q() is the SQL query form. All string (%s) variables MUST be passed through dbesc(). 
-// All int values MUST be cast to integer using intval(); 
+
+
+/* initialise content region */
+
+if(! x($a->page,'content'))
+	$a->page['content'] = '';
+
+
+/**
+ * Call module functions
+ */
 
 if($a->module_loaded) {
 	$a->page['page_title'] = $a->module;
 	if(function_exists($a->module . '_init')) {
 		$func = $a->module . '_init';
 		$func($a);
-    	}
+	}
 
-	if(($_SERVER['REQUEST_METHOD'] == 'POST') && (! $a->error)
+	if(($_SERVER['REQUEST_METHOD'] === 'POST') && (! $a->error)
 		&& (function_exists($a->module . '_post'))
 		&& (! x($_POST,'auth-params'))) {
 		$func = $a->module . '_post';
@@ -75,43 +245,82 @@ if($a->module_loaded) {
 
 	if((! $a->error) && (function_exists($a->module . '_content'))) {
 		$func = $a->module . '_content';
-      		$a->page['content'] .= $func($a);
+		$a->page['content'] .= $func($a);
 	}
 
-	footer($a);
 }
 
-// report anything important happening
+// 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="' . $homebase . '" ; </script>';
+
+// now that we've been through the module content, see if the page reported
+// a permission problem and if so, a 403 response would seem to be in order.
+
+if(stristr($_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"
-		. $a->page['content'];
+		. ((x($a->page,'content')) ? $a->page['content'] : '');
 	unset($_SESSION['sysmsg']);
 }
 
-if(stristr($_SESSION['sysmsg'], t('Permission denied'))) {
-	header($_SERVER["SERVER_PROTOCOL"] . ' 403 ' . t('Permission denied.'));
-}
 
+call_hooks('page_end', $a->page['content']);
+
+
+/**
+ *
+ * Add a place for the pause/resume Ajax indicator
+ *
+ */
+
+$a->page['content'] .=  '<div id="pause"></div>';
 
-// Feel free to comment out this line on production sites.
-$a->page['content'] .= $debug_text;
 
-// build page
+/**
+ *
+ * Add the navigation (menu) template
+ *
+ */
 
-// Navigation (menu) template
-require_once("nav.php");
+if($a->module != 'install') {
+	require_once('nav.php');
+	nav($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");
-$template = "view/" 
-	. ((x($a->page,'theme')) ? $a->page['theme'] . '/' : "" ) 
-	. ((x($a->page,'template')) ? $a->page['template'] : 'default' ) 
-	. ".php";
 
-require_once($template);
+$template = 'view/' . $lang . '/' 
+	. ((x($a->page,'template')) ? $a->page['template'] : 'default' ) . '.php';
+
+if(file_exists($template))
+	require_once($template);
+else
+	require_once(str_replace($lang . '/', '', $template));
 
 session_write_close();
 exit;