Refs #2129 - integrates new installer code from http://github.com/cash/Elgg - does not work yet with non-Apache web servers

git-svn-id: http://code.elgg.org/elgg/trunk@6991 36083f99-b078-4883-b0ff-0f9b5a30f544

2 files changed, 69 insertions, 182 deletions

diff --git a/engine/settings.example.php b/engine/settings.example.php
index 4f47872cb..aa50be6bc 100644
--- a/engine/settings.example.php
+++ b/engine/settings.example.php
@@ -29,105 +29,24 @@ if (!isset($CONFIG)) {
  * to explain, but if you know you need it, skip past this section.
  */
 
-/**
- * The database username
- *
- * @global string $CONFIG->dbuser
- * @name $CONFIG->dbuser
- */
-$CONFIG->dbuser = '{{CONFIG_DBUSER}}';
-
-/**
- * The database password
- *
- * @global string $CONFIG->dbpass
- */
-$CONFIG->dbpass = '{{CONFIG_DBPASS}}';
-
-/**
- * The database name
- *
- * @global string $CONFIG->dbname
- */
-$CONFIG->dbname = '{{CONFIG_DBNAME}}';
-
-/**
- * The database host.
- *
- * For most installations, this is 'localhost'
- *
- * @global string $CONFIG->dbhost
- */
-$CONFIG->dbhost = '{{CONFIG_DBHOST}}';
-
-/**
- * The database prefix
- *
- * This prefix will be appended to all Elgg tables.  If you're sharing
- * a database with other applications, use a database prefix to namespace tables
- * in order to avoid table name collisions.
- *
- * @global string $CONFIG->dbprefix
- */
-$CONFIG->dbprefix = '{{CONFIG_DBPREFIX}}';
-
-/**
- * Multiple database connections
- *
- * Here you can set up multiple connections for reads and writes. To do this, uncomment out
- * the lines below.
- *
- * @todo Does this work?
- */
-
-/*
-
-// Yes! We want to split reads and writes
-$CONFIG->db->split = true;
-
-// READS
-// Database username
-$CONFIG->db['read']->dbuser = "";
-
-// Database password
-$CONFIG->db['read']->dbpass = "";
-
-// Database name
-$CONFIG->db['read']->dbname = "";
-
-// Database server
-// (For most configurations, you can leave this as 'localhost')
-$CONFIG->db['read']->dbhost = "localhost";
-
-// WRITES
 // Database username
-$CONFIG->db['write']->dbuser = "";
+$CONFIG->dbuser = '{{dbuser}}';
 
 // Database password
-$CONFIG->db['write']->dbpass = "";
+$CONFIG->dbpass = '{{dbpassword}}';
 
 // Database name
-$CONFIG->db['write']->dbname = "";
+$CONFIG->dbname = '{{dbname}}';
 
 // Database server
 // (For most configurations, you can leave this as 'localhost')
-$CONFIG->db['write']->dbhost = "localhost";
+$CONFIG->dbhost = '{{dbhost}}';
 
- */
-
-/*
- * For extra connections for both reads and writes, you can turn both
- * $CONFIG->db['read'] and $CONFIG->db['write'] into an array, eg:
- *
- * 	$CONFIG->db['read'][0]->dbhost = "localhost";
- *
- * Note that the array keys must be numeric and consecutive, i.e., they start
- * at 0, the next one must be at 1, etc.
- */
+// Database table prefix
+// If you're sharing a database with other applications, you will want to use this
+// to differentiate Elgg's tables.
+$CONFIG->dbprefix = '{{dbprefix}}';
 
-/*
- * Optional configuration
- */
 
 /**
  * Memcache setup (optional)
@@ -146,6 +65,7 @@ $CONFIG->db['write']->dbhost = "localhost";
 //	array('server2', 11211)
 //);
 
+
 /**
  * Use non-standard headers for broken MTAs.
  *
diff --git a/engine/start.php b/engine/start.php
index d9ec01b87..db9bff0e4 100644
--- a/engine/start.php
+++ b/engine/start.php
@@ -11,19 +11,19 @@
  * If Elgg is uninstalled, the browser will be redirected to an
  * installation page.
  *
- * If in an installation, attempts to save the .htaccess and
- * settings.php files during {@link sanitised()}
- *
- * @warning The view type is set to 'failsafe' during boot.  This means calling
- * {@link elgg_get_viewtype()} will return 'failsafe' in any function called by
- * the events listed above regardless of actual view.  The original view is restored
- * after booting.
- *
  * @see install.php
  * @package Elgg.Core
  * @subpackage Core
  */
 
+/*
+ * No settings means a fresh install
+ */
+if (!file_exists(dirname(__FILE__) . '/settings.php')) {
+	header("Location: install.php");
+	exit;
+}
+
 /**
  * The time with microseconds when the Elgg engine was started.
  *
@@ -73,110 +73,77 @@ foreach ($required_files as $file) {
 	}
 }
 
-// Use fallback view until sanitised
-$oldview = get_input('view', 'default');
-set_input('view', 'failsafe');
-
 // Register the error handler
 set_error_handler('__elgg_php_error_handler');
 set_exception_handler('__elgg_php_exception_handler');
 
-// attempt to save settings.php and .htaccess if in installation.
-if ($sanitised = sanitised()) {
-	/**
-	 * Load the system settings
-	 */
-	if (!include_once(dirname(__FILE__) . "/settings.php")) {
-		throw new InstallationException("Elgg could not load the settings file.");
-	}
 
-	// Get config
-	global $CONFIG;
-
-	// load the rest of the library files from engine/lib/
-	$lib_files = array(
-		// these need to be loaded first.
-		'database.php', 'actions.php',
-
-		'admin.php', 'annotations.php', 'api.php', 'cache.php',
-		'calendar.php', 'configuration.php', 'cron.php', 'entities.php',
-		'export.php', 'extender.php', 'filestore.php', 'group.php',
-		'input.php', 'install.php', 'location.php', 'mb_wrapper.php',
-		'memcache.php', 'metadata.php', 'metastrings.php', 'notification.php',
-		'objects.php', 'opendd.php', 'pagehandler.php',
-		'pageowner.php', 'pam.php', 'plugins.php', 'query.php',
-		'relationships.php', 'river.php', 'sites.php', 'social.php',
-		'statistics.php', 'system_log.php', 'tags.php', 'usersettings.php',
-		'users.php', 'version.php', 'widgets.php', 'xml.php', 'xml-rpc.php'
-	);
-
-	foreach($lib_files as $file) {
-		$file = $lib_dir . $file;
-		elgg_log("Loading $file...");
-		if (!include_once($file)) {
-			throw new InstallationException("Could not load {$file}");
-		}
-	}
-} else {
-	throw new InstallationException(elgg_echo('installation:error:configuration'));
+/**
+ * Load the system settings
+ */
+if (!include_once(dirname(__FILE__) . "/settings.php")) {
+	throw new InstallationException("Elgg could not load the settings file.");
 }
 
-// Autodetect some default configuration settings
-set_default_config();
-
-// Trigger boot events for core. Plugins can't hook
-// into this because they haven't been loaded yet.
-trigger_elgg_event('boot', 'system');
-
-// Check if installed
-$installed = is_installed();
-$db_installed = is_db_installed();
 
-/**
- * Forward if Elgg is not installed.
- */
-if ((!$installed || !$db_installed)
-	&& !substr_count($_SERVER["PHP_SELF"], "install.php")
-	&& !substr_count($_SERVER["PHP_SELF"], "css.php")
-	&& !substr_count($_SERVER["PHP_SELF"], "action_handler.php")) {
+// load the rest of the library files from engine/lib/
+$lib_files = array(
+	// these need to be loaded first.
+	'database.php', 'actions.php',
+
+	'admin.php', 'annotations.php', 'api.php', 'cache.php',
+	'calendar.php', 'configuration.php', 'cron.php', 'entities.php',
+	'export.php', 'extender.php', 'filestore.php', 'group.php',
+	'input.php', 'install.php', 'location.php', 'mb_wrapper.php',
+	'memcache.php', 'metadata.php', 'metastrings.php', 'notification.php',
+	'objects.php', 'opendd.php', 'pagehandler.php',
+	'pageowner.php', 'pam.php', 'plugins.php', 'query.php',
+	'relationships.php', 'river.php', 'sites.php', 'social.php',
+	'statistics.php', 'system_log.php', 'tags.php', 'usersettings.php',
+	'users.php', 'version.php', 'widgets.php', 'xml.php', 'xml-rpc.php'
+);
 
-		header("Location: install.php");
-		exit;
+foreach($lib_files as $file) {
+	$file = $lib_dir . $file;
+	elgg_log("Loading $file...");
+	if (!include_once($file)) {
+		throw new InstallationException("Could not load {$file}");
+	}
 }
 
-// Load plugins
-if (($installed) && ($db_installed) && ($sanitised)) {
-	load_plugins();
-
-	trigger_elgg_event('plugins_boot', 'system');
+// check if the install was completed
+// @todo move into function
+$installed = FALSE;
+try {
+	$installed = is_installed();
+} catch (DatabaseException $e) {}
+if (!$installed) {
+	header("Location: install.php");
+	exit;
 }
 
-// Trigger system init event for plugins
-if (!substr_count($_SERVER["PHP_SELF"], "install.php")
-	&& !substr_count($_SERVER["PHP_SELF"], "setup.php")) {
+// Autodetect some default configuration settings
+set_default_config();
 
-	trigger_elgg_event('init', 'system');
-}
+// Trigger events
+trigger_elgg_event('boot', 'system');
 
-// System booted, return to normal view
-if (!elgg_is_valid_view_type($oldview)) {
-	if (empty($CONFIG->view)) {
-		$oldview = 'default';
-	} else {
-		$oldview = $CONFIG->view;
-	}
-}
+// Load the plugins that are active
+load_plugins();
+trigger_elgg_event('plugins_boot', 'system');
 
-set_input('view', $oldview);
+// Trigger system init event for plugins
+trigger_elgg_event('init', 'system');
 
 // Regenerate the simple cache if expired.
-// Don't do it on upgrade, because upgrade does it itself.
-if (($installed) && ($db_installed) && !(defined('upgrading') && upgrading == 'upgrading')) {
-	$lastupdate = datalist_get("simplecache_lastupdate_$oldview");
-	$lastcached = datalist_get("simplecache_lastcached_$oldview");
+// Don't do it on upgrade because upgrade does it itself.
+if (!defined('upgrading')) {
+	$view = get_input('view', 'default');
+	$lastupdate = datalist_get("simplecache_lastupdate_$view");
+	$lastcached = datalist_get("simplecache_lastcached_$view");
 	if ($lastupdate == 0 || $lastcached < $lastupdate) {
-		elgg_view_regenerate_simplecache($oldview);
+		elgg_view_regenerate_simplecache($view);
 	}
 	// needs to be set for links in html head
 	$CONFIG->lastcache = $lastcached;
-}
\ No newline at end of file
+}