- Improved module loading when serving cached pages.  Moshe's bootstrap patch.

- Used legend and fieldset tags for the configuration page.

CHANGELOG

@@ -2,6 +2,8 @@ Drupal x.x.x, xxxx-xx-xx
 ------------------------
 
 - added support for the MetaWeblog API and MoveableType extensions.
+- performance:
+    * improved module loading when serving cached pages.
 - theme system:
     * made all theme functions start with 'theme_'.
     * made all theme functions return their output.

cron.php

 <?php
 // $Id$
 
+include_once "includes/bootstrap.inc";
 include_once "includes/common.inc";
 
 /*

database/database.mssql

@@ -299,6 +299,7 @@ CREATE TABLE [dbo].[system] (
   [type] [varchar] (255) NOT NULL ,
   [description] [varchar] (255) NOT NULL ,
   [status] [int] NOT NULL
+  [bootstrap] [int] NOT NULL
 ) ON [PRIMARY]
 GO
 

database/database.mysql

@@ -426,6 +426,7 @@ CREATE TABLE system (
   type varchar(255) NOT NULL default '',
   description varchar(255) NOT NULL default '',
   status int(2) NOT NULL default '0',
+  bootstrap int(2) NOT NULL default '0',
   PRIMARY KEY  (filename)
 ) TYPE=MyISAM;
 

database/database.pgsql

@@ -422,6 +422,7 @@ CREATE TABLE system (
   type varchar(255) NOT NULL default '',
   description varchar(255) NOT NULL default '',
   status integer NOT NULL default '0',
+  bootstrap integer NOT NULL default '0',
   PRIMARY KEY  (filename)
 );
 

error.php

 <?php
 // $Id$
 
+include_once "includes/bootstrap.inc";
 include_once "includes/common.inc";
 
 $errors = array(

includes/bootstrap.inc

+<?php
+
+function conf_init() {
+
+  /*
+  ** Try finding a matching configuration file by stripping the website's
+  ** URI from left to right.  If no configuration file is found, return a
+  ** default value 'conf'.
+  */
+
+  $uri = $_SERVER["PHP_SELF"];
+
+  $file = strtolower(strtr($_SERVER["HTTP_HOST"] . substr($uri, 0, strrpos($uri, "/")), "/:", ".."));
+
+  while (strlen($file) > 4) {
+    if (file_exists("includes/$file.php")) {
+      return $file;
+    }
+    else {
+      $file = substr($file, strpos($file, ".") + 1);
+    }
+  }
+
+  return "conf";
+}
+
+function variable_init($conf = array()) {
+  $result = db_query("SELECT * FROM {variable} ");
+  while ($variable = db_fetch_object($result)) {
+    if (!isset($conf[$variable->name])) {
+      $conf[$variable->name] = unserialize($variable->value);
+    }
+  }
+
+  return $conf;
+}
+
+function variable_get($name, $default) {
+  global $conf;
+
+  return isset($conf[$name]) ? $conf[$name] : $default;
+}
+
+function variable_set($name, $value) {
+  global $conf;
+
+  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
+  db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", $name, serialize($value));
+
+  $conf[$name] = $value;
+}
+
+function variable_del($name) {
+  global $conf;
+
+  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
+
+  unset($conf[$name]);
+}
+
+function cache_get($key) {
+  $cache = db_fetch_object(db_query("SELECT data, created FROM {cache} WHERE cid = '%s'", $key));
+  return $cache->data ? $cache : 0;
+}
+
+function cache_set($cid, $data, $expire = 0) {
+  db_query("UPDATE {cache} SET data = '%s', created = %d, expire = %d WHERE cid = '%s'", $data, time(), $expire, $cid);
+  if (!db_affected_rows()) {
+    db_query("INSERT INTO {cache} (cid, data, created, expire) VALUES('%s', '%s', %d, %d)", $cid, $data, time(), $expire);
+  }
+}
+
+function cache_clear_all($cid = NULL) {
+  if (empty($cid)) {
+    db_query("DELETE FROM {cache} WHERE expire <> 0");
+  }
+  else {
+    db_query("DELETE FROM {cache} WHERE cid = '%s'", $cid);
+  }
+}
+
+function page_set_cache() {
+  global $user;
+
+  if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
+    if ($data = ob_get_contents()) {
+      cache_set(request_uri(), $data, 1);
+    }
+  }
+}
+
+function page_get_cache() {
+  global $user;
+
+  $cache = NULL;
+
+  if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
+    $cache = cache_get(request_uri());
+
+    if (empty($cache)) {
+      ob_start();
+    }
+  }
+
+  return $cache;
+}
+
+function drupal_page_header() {
+
+  if (variable_get("dev_timer", 0)) {
+    timer_start();
+  }
+
+  if (variable_get("cache", 0)) {
+    if ($cache = page_get_cache()) {
+
+      // Set default values:
+      $date = gmdate("D, d M Y H:i:s", $cache->created) ." GMT";
+      $etag = '"'. md5($date) .'"';
+
+      // Check http headers:
+      $modified_since = isset($_SERVER["HTTP_IF_MODIFIED_SINCE"]) ? $_SERVER["HTTP_IF_MODIFIED_SINCE"] == $date : NULL;
+      $none_match = isset($_SERVER["HTTP_IF_NONE_MATCH"]) ? $_SERVER["HTTP_IF_NONE_MATCH"] == $etag : NULL;
+
+      // The type checking here is very important, be careful when changing entries.
+      if (($modified_since !== NULL || $none_match !== NULL) && $modified_since !== false && $none_match !== false) {
+        header("HTTP/1.0 304 Not Modified");
+        exit();
+      }
+
+      // Send appropriate response:
+      header("Last-Modified: $date");
+      header("ETag: $etag");
+      print $cache->data;
+
+      /*
+      ** call all init() and exit() hooks without including all modules
+      ** only use those hooks for critical operations
+      */
+      foreach (module_list(0, 1) as $module) {
+        if (is_array($module) && $module['bootstrap']) {
+          include_once $module['filename'];
+          foreach (bootstrap_hooks() as $hook) {
+            module_invoke($module['name'], $hook);
+          }
+        }
+      }
+      exit();
+    }
+  }
+}
+
+// critical hooks called even when serving a cached page
+function bootstrap_hooks() {
+  return array('init', 'exit');
+}
+
+function referer_uri() {
+
+  if (isset($_SERVER["HTTP_REFERER"])) {
+    $uri = $_SERVER["HTTP_REFERER"];
+
+    return check_url($uri);
+  }
+}
+
+function arg($index) {
+
+  static $arguments;
+
+  if (empty($arguments)) {
+    $arguments = explode("/", $_GET["q"]);
+  }
+
+  return $arguments[$index];
+}
+
+function check_query($text) {
+  return addslashes($text);
+}
+
+function check_url($uri) {
+  $uri = htmlspecialchars($uri, ENT_QUOTES);
+
+  /*
+  ** We replace ( and ) with their entity equivalents to prevent XSS
+  ** attacks.
+  */
+
+  $uri = strtr($uri, array("(" => "&040;", ")" => "&041;"));
+
+  return $uri;
+}
+
+function request_uri() {
+  /*
+  ** Since request_uri() is only available on Apache, we generate
+  ** equivalent using other environment vars.
+  */
+
+  if (isset($_SERVER["REQUEST_URI"])) {
+    $uri = $_SERVER["REQUEST_URI"];
+  }
+  else {
+    $uri = $_SERVER["PHP_SELF"] ."?". $_SERVER["QUERY_STRING"];
+  }
+
+  return check_url($uri);
+}
+function timer_start() {
+  global $timer;
+  list($usec, $sec) = explode(" ", microtime());
+  $timer = (float)$usec + (float)$sec;
+}
+
+unset($conf);
+$config = conf_init();
+
+include_once "includes/$config.php";
+include_once "includes/database.inc";
+include_once "includes/session.inc";
+include_once "includes/module.inc";
+
+// initialize configuration variables, using values from conf.php if available:
+$conf = variable_init(isset($conf) ? $conf : array());
+?>

includes/common.inc

 <?php
 // $Id$
 
-function conf_init() {
-
-  /*
-  ** Try finding a matching configuration file by stripping the website's
-  ** URI from left to right.  If no configuration file is found, return a
-  ** default value 'conf'.
-  */
-
-  $uri = $_SERVER["PHP_SELF"];
-
-  $file = strtolower(strtr($_SERVER["HTTP_HOST"] . substr($uri, 0, strrpos($uri, "/")), "/:", ".."));
-
-  while (strlen($file) > 4) {
-    if (file_exists("includes/$file.php")) {
-      return $file;
-    }
-    else {
-      $file = substr($file, strpos($file, ".") + 1);
-    }
-  }
-
-  return "conf";
-}
-
 /**
  * Build the alias/path array
  */
@@ -100,17 +76,6 @@ function fix_gpc_magic() {
   $fixed = true;
 }
 
-function arg($index) {
-
-  static $arguments;
-
-  if (empty($arguments)) {
-    $arguments = explode("/", $_GET["q"]);
-  }
-
-  return $arguments[$index];
-}
-
 function array2object($node) {
 
   if (is_array($node)) {
@@ -139,31 +104,6 @@ function object2array($node) {
   return $array;
 }
 
-function referer_uri() {
-
-  if (isset($_SERVER["HTTP_REFERER"])) {
-    $uri = $_SERVER["HTTP_REFERER"];
-
-    return check_url($uri);
-  }
-}
-
-function request_uri() {
-  /*
-  ** Since request_uri() is only available on Apache, we generate
-  ** equivalent using other environment vars.
-  */
-
-  if (isset($_SERVER["REQUEST_URI"])) {
-    $uri = $_SERVER["REQUEST_URI"];
-  }
-  else {
-    $uri = $_SERVER["PHP_SELF"] ."?". $_SERVER["QUERY_STRING"];
-  }
-
-  return check_url($uri);
-}
-
 function message_access() {
   return t("You are not authorized to access this page.");
 }
@@ -210,40 +150,6 @@ function t($string, $args = 0) {
   }
 }
 
-function variable_init($conf = array()) {
-  $result = db_query("SELECT * FROM {variable} ");
-  while ($variable = db_fetch_object($result)) {
-    if (!isset($conf[$variable->name])) {
-      $conf[$variable->name] = unserialize($variable->value);
-    }
-  }
-
-  return $conf;
-}
-
-function variable_get($name, $default) {
-  global $conf;
-
-  return isset($conf[$name]) ? $conf[$name] : $default;
-}
-
-function variable_set($name, $value) {
-  global $conf;
-
-  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
-  db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", $name, serialize($value));
-
-  $conf[$name] = $value;
-}
-
-function variable_del($name) {
-  global $conf;
-
-  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
-
-  unset($conf[$name]);
-}
-
 function drupal_specialchars($input, $quotes = ENT_NOQUOTES) {
 
   /*
@@ -476,27 +382,10 @@ function valid_input_data($data) {
   return 1;
 }
 
-function check_url($uri) {
-  $uri = htmlspecialchars($uri, ENT_QUOTES);
-
-  /*
-  ** We replace ( and ) with their entity equivalents to prevent XSS
-  ** attacks.
-  */
-
-  $uri = strtr($uri, array("(" => "&040;", ")" => "&041;"));
-
-  return $uri;
-}
-
 function check_form($text) {
   return drupal_specialchars($text, ENT_QUOTES);
 }
 
-function check_query($text) {
-  return addslashes($text);
-}
-
 function filter($text) {
 
   $modules = module_list();
@@ -672,53 +561,6 @@ function format_size($size) {
   return t("%size %suffix", array("%size" => $size, "%suffix" => $suffix));
 }
 
-function cache_get($key) {
-  $cache = db_fetch_object(db_query("SELECT data, created FROM {cache} WHERE cid = '%s'", $key));
-  return $cache->data ? $cache : 0;
-}
-
-function cache_set($cid, $data, $expire = 0) {
-  db_query("UPDATE {cache} SET data = '%s', created = %d, expire = %d WHERE cid = '%s'", $data, time(), $expire, $cid);
-  if (!db_affected_rows()) {
-    db_query("INSERT INTO {cache} (cid, data, created, expire) VALUES('%s', '%s', %d, %d)", $cid, $data, time(), $expire);
-  }
-}
-
-function cache_clear_all($cid = NULL) {
-  if (empty($cid)) {
-    db_query("DELETE FROM {cache} WHERE expire <> 0");
-  }
-  else {
-    db_query("DELETE FROM {cache} WHERE cid = '%s'", $cid);
-  }
-}
-
-function page_set_cache() {
-  global $user;
-
-  if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
-    if ($data = ob_get_contents()) {
-      cache_set(request_uri(), $data, 1);
-    }
-  }
-}
-
-function page_get_cache() {
-  global $user;
-
-  $cache = NULL;
-
-  if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
-    $cache = cache_get(request_uri());
-
-    if (empty($cache)) {
-      ob_start();
-    }
-  }
-
-  return $cache;
-}
-
 function format_interval($timestamp) {
   $units = array("1 year|%count years" => 31536000, "1 week|%count weeks" => 604800, "1 day|%count days" => 86400, "1 hour|%count hours" => 3600, "1 min|%count min" => 60, "1 sec|%count sec" => 1);
   foreach ($units as $key=>$value) {
@@ -1005,64 +847,6 @@ function link_node($node, $main = 0) {
   return module_invoke_all("link", "node", $node, $main);
 }
 
-function timer_start() {
-  global $timer;
-  list($usec, $sec) = explode(" ", microtime());
-  $timer = (float)$usec + (float)$sec;
-}
-
-function drupal_page_header() {
-
-  if (variable_get("dev_timer", 0)) {
-    timer_start();
-  }
-
-  if (variable_get("cache", 0)) {
-    if ($cache = page_get_cache()) {
-
-      // Set default values:
-      $date = gmdate("D, d M Y H:i:s", $cache->created) ." GMT";
-      $etag = '"'. md5($date) .'"';
-
-      // Check http headers:
-      $modified_since = isset($_SERVER["HTTP_IF_MODIFIED_SINCE"]) ? $_SERVER["HTTP_IF_MODIFIED_SINCE"] == $date : NULL;
-      $none_match = isset($_SERVER["HTTP_IF_NONE_MATCH"]) ? $_SERVER["HTTP_IF_NONE_MATCH"] == $etag : NULL;
-
-      // The type checking here is very important, be careful when changing entries.
-      if (($modified_since !== NULL || $none_match !== NULL) && $modified_since !== false && $none_match !== false) {
-        header("HTTP/1.0 304 Not Modified");
-        exit();
-      }
-
-      // Send appropriate response:
-      header("Last-Modified: $date");
-      header("ETag: $etag");
-      print $cache->data;
-
-      /*
-      ** A hook for modules where modules may take action at the end of a
-      ** request good uses include setting a cache, page logging, etc.
-      */
-
-      module_invoke_all("exit");
-
-      exit();
-    }
-  }
-
-  /*
-  ** Putting the check here avoids SQL query overhead in case we are
-  ** serving cached pages.  The downside, however, is that the init
-  ** hooks might use unchecked data.
-  */
-
-  if (!user_access("bypass input data check")) {
-    if (!valid_input_data($_REQUEST)) {
-      die("terminated request because of suspicious input data");
-    }
-  }
-}
-
 function drupal_page_footer() {
   if (variable_get("cache", 0)) {
     page_set_cache();
@@ -1076,22 +860,12 @@ function drupal_page_footer() {
   module_invoke_all("exit");
 }
 
-unset($conf);
-
-$config = conf_init();
-
-include_once "includes/$config.php";
-include_once "includes/database.inc";
-include_once "includes/module.inc";
 include_once "includes/theme.inc";
 include_once "includes/pager.inc";
 include_once "includes/menu.inc";
 include_once "includes/xmlrpc.inc";
 include_once "includes/tablesort.inc";
 
-// initialize configuration variables, using values from conf.php if available:
-$conf = variable_init(isset($conf) ? $conf : array());
-
 // set error handler:
 set_error_handler("error_handler");
 
@@ -1116,9 +890,16 @@ function drupal_page_footer() {
 // initialize installed modules:
 module_init();
 
+if (!user_access("bypass input data check")) {
+  if (!valid_input_data($_REQUEST)) {
+    die("terminated request because of suspicious input data");
+  }
+}
+
 // initialize localization system:
 $locale = locale_init();
 
 // initialize theme:
 $theme = init_theme();
+
 ?>

includes/module.inc

@@ -40,8 +40,8 @@ function module_invoke_all($hook, $a1 = NULL, $a2 = NULL, $a3 = NULL, $a4 = NULL
   return $return;
 }
 
-// return array of module names (includes lazy module loading):
-function module_list($refresh = 0) {
+// return array of module names (includes lazy module loading if not in bootstrap mode)
+function module_list($refresh = 0, $bootstrap = 0) {
   static $list;
 
   if ($refresh) {
@@ -50,16 +50,20 @@ function module_list($refresh = 0) {
 
   if (!$list) {
     $list = array("admin" => "admin", "system" => "system", "user" => "user", "watchdog" => "watchdog");
-    $result = db_query("SELECT name, filename FROM {system} WHERE type = 'module' AND status = '1' ORDER BY name");
+    $result = db_query("SELECT name, filename, bootstrap FROM {system} WHERE type = 'module' AND status = '1' ORDER BY name");
     while ($module = db_fetch_object($result)) {
       if (file_exists($module->filename)) {
-        $list[$module->name] = $module->name;
-        include_once $module->filename;
+        if ($bootstrap) {
+          $list[$module->name] = array("name"=> $module->name, "bootstrap" => $module->bootstrap, "filename" => $module->filename);
+        }
+        else {
+          $list[$module->name] = $module->name;
+          include_once $module->filename;
+        }
       }
     }
     natcasesort($list);
   }
-
   return $list;
 }
 

includes/session.inc

+<?php
+
+session_set_save_handler("sess_open", "sess_close", "sess_read", "sess_write", "sess_destroy", "sess_gc");
+session_start();
+
+/*** Session functions *****************************************************/
+
+function sess_open($save_path, $session_name) {
+  return 1;